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Japanese Beetle (Popillia japonica)

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Order: Coleoptera (ko-lee-OP-ter-a) (Info)
Family: Scarabaeidae
Genus: Popillia
Species: japonica (ja-PON-ik-uh) (Info)

Profile:

3 positives
10 neutrals
40 negatives

Regional...

This bug has been reportedly found in the following regions:

Athens, Alabama
Meridianville, Alabama
Mobile, Alabama
Vincent, Alabama
Deer, Arkansas
Fayetteville, Arkansas
San Jose, California
West Hartford, Connecticut
Ocala, Florida
Palm Bay, Florida
Saint Petersburg, Florida
Dahlonega, Georgia
Decatur, Georgia
Fortson, Georgia
Hazlehurst, Georgia
Mableton, Georgia
Stone Mountain, Georgia
Thomson, Georgia
Warner Robins, Georgia
Young Harris, Georgia
Ashton, Illinois
Aurora, Illinois
Batavia, Illinois
Bolingbrook, Illinois
Cary, Illinois
Champaign, Illinois
Chicago, Illinois
Crystal Lake, Illinois
Danville, Illinois
Dundee, Illinois (2 reports)
Elburn, Illinois
Evergreen Park, Illinois
Galena, Illinois
Geneva, Illinois
Gibson City, Illinois
Hampshire, Illinois
Hinsdale, Illinois
Machesney Park, Illinois
Mackinaw, Illinois
Minooka, Illinois
Morrison, Illinois
Mount Vernon, Illinois
Naperville, Illinois
Oregon, Illinois
Paris, Illinois
Quincy, Illinois
Rock Falls, Illinois
Rockford, Illinois
Roscoe, Illinois
Shelbyville, Illinois
Springfield, Illinois
Thomasboro, Illinois
Wadsworth, Illinois
Washington, Illinois
Wilmette, Illinois
Anderson, Indiana
Bedford, Indiana
Brookville, Indiana
Carmel, Indiana (2 reports)
Highland, Indiana
Hobart, Indiana
Jeffersonville, Indiana
Logansport, Indiana
Lowell, Indiana
Macy, Indiana
Noblesville, Indiana
Poneto, Indiana
Portage, Indiana
Uniondale, Indiana
Ames, Iowa
Cedar Falls, Iowa
Cedar Rapids, Iowa (2 reports)
Davenport, Iowa
Dubuque, Iowa
Iowa City, Iowa
Peosta, Iowa
Swisher, Iowa
Teeds Grove, Iowa
Urbandale, Iowa
Benton, Kentucky
Berea, Kentucky
Calvert City, Kentucky
Ewing, Kentucky
Hebron, Kentucky
Louisville, Kentucky
Paducah, Kentucky
Salvisa, Kentucky
Belle Chasse, Louisiana
Lebanon, Maine
South China, Maine
Abingdon, Maryland
Bishopville, Maryland
Bowie, Maryland
Frederick, Maryland
Oakland, Maryland
Valley Lee, Maryland
Westminster, Maryland
Assonet, Massachusetts
Athol, Massachusetts
Boxford, Massachusetts
Bridgewater, Massachusetts
Brimfield, Massachusetts
Needham, Massachusetts
Turners Falls, Massachusetts
Wales, Massachusetts
Ada, Michigan
Birmingham, Michigan
Burton, Michigan
Cassopolis, Michigan
Cement City, Michigan
Croswell, Michigan
Dearborn Heights, Michigan
Gladwin, Michigan
Grand Rapids, Michigan
New Baltimore, Michigan
Northville, Michigan
Southfield, Michigan
White Lake, Michigan
Whitmore Lake, Michigan
Ypsilanti, Michigan
Eden Prairie, Minnesota
Minneapolis, Minnesota (2 reports)
Sandstone, Minnesota
Stillwater, Minnesota (2 reports)
Florence, Mississippi
Ballwin, Missouri (2 reports)
Florissant, Missouri
Saint Louis, Missouri
Springfield, Missouri
Blair, Nebraska
Bedford, New Hampshire
Deerfield, New Hampshire
Derry, New Hampshire
Bridgeton, New Jersey
Maplewood, New Jersey
Three Bridges, New Jersey
Trenton, New Jersey
Buffalo, New York (2 reports)
Crown Point, New York
Endicott, New York
Ghent, New York
Hamburg, New York
Himrod, New York
Jamestown, New York
Liverpool, New York
Orchard Park, New York
Charlotte, North Carolina (2 reports)
Concord, North Carolina
Elizabeth City, North Carolina
Greensboro, North Carolina
Huntersville, North Carolina
Indian Trail, North Carolina
Liberty, North Carolina
Mount Holly, North Carolina
Point Harbor, North Carolina
Raleigh, North Carolina (2 reports)
Rutherfordton, North Carolina
Southern Pines, North Carolina
Winterville, North Carolina
Zebulon, North Carolina
Bucyrus, Ohio
Cincinnati, Ohio
Colerain, Ohio
Columbus, Ohio
Dayton, Ohio (2 reports)
Delaware, Ohio (2 reports)
Diamond, Ohio
Lebanon, Ohio
Lima, Ohio
Mineral Ridge, Ohio
Monroe, Ohio
Mount Orab, Ohio
North Ridgeville, Ohio
Oak Hill, Ohio
Ottawa, Ohio
Painesville, Ohio
Ravenna, Ohio
Toledo, Ohio
Albrightsville, Pennsylvania
Allentown, Pennsylvania
Bethlehem, Pennsylvania
Cornwall, Pennsylvania
Downingtown, Pennsylvania
Hummelstown, Pennsylvania
Lebanon, Pennsylvania
Lititz, Pennsylvania
Millersburg, Pennsylvania
Mount Pleasant Mills, Pennsylvania
Norristown, Pennsylvania
Pittsburgh, Pennsylvania
Quakertown, Pennsylvania
Sayre, Pennsylvania
York, Pennsylvania
North Augusta, South Carolina
Rock Hill, South Carolina
Summerville, South Carolina (2 reports)
Clarksville, Tennessee
Crossville, Tennessee
Greenback, Tennessee
Iron City, Tennessee
Kingsport, Tennessee
Lebanon, Tennessee
Old Hickory, Tennessee
Fort Worth, Texas
Barton, Vermont
Essex Junction, Vermont
Ashburn, Virginia
Blacksburg, Virginia
Bluefield, Virginia
Harrisonburg, Virginia
Jonesville, Virginia
Marshall, Virginia
White Stone, Virginia
Williamsburg, Virginia
Martinsburg, West Virginia
Baraboo, Wisconsin
East Troy, Wisconsin
Elkhorn, Wisconsin
Milwaukee, Wisconsin
Waukesha, Wisconsin
Wisconsin Dells, Wisconsin

By melody
Thumbnail #1 of Japanese Beetle (Popillia japonica) by melody

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Thumbnail #2 of Japanese Beetle (Popillia japonica) by Vee8ch

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There are a total of 31 photos.
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Member Notes:

RatingAuthorContent
Negative melody On Jul 24, 2006, melody from Benton, KY
(Zone 7a) wrote:

The adult beetle damages the leaves and fruit on more than 200 different plants. The larvae feed on roots of grasses, vegetables and nursery plants.

They travel in great numbers and can strip a garden nearly bare in just a short time

This bad bug was introduced in 1916 on iris roots from Japan.

Negative mummu On Jul 25, 2006, mummu from Lebanon, ME
(Zone 4b) wrote:

This is my most hated garden rival. Roses, Primroses, fruit trees, berry bushes, grapevines, asparagus ferns, they go from one to the next. I put a solution of dishwashing liquid and water in a spray bottle and squirt them and it kills them. They breath through their bodies and it suffocates them. I've tried treating the lawn with a grub killer, but my lawn is just too big for it to have a measurable effect.

Positive jam1 On Jul 26, 2006, jam1 from Buffalo, NY wrote:

Living in upstate N.Y.,I also noticed it lands on ,whitebirch and sandcherry with a appetite that won`t quit.JAM1

Negative Julesgarden On Jul 28, 2006, Julesgarden from Abingdon, MD
(Zone 7a) wrote:

This beetle is total devastation to any garden in my area. It is so wide spread that you can not even find beetle bags in any of the stores in my area. I use the beetle bags back in the wooded part of my garden to try and keep them from my garden plants. It draws a lot of beetles because of the harmone disc w/the bag. I still have my garden eaten. The only thing my husband & I found that can help get rid of this awful beetle is to use Seven dust or spray, using insecticidal soap does not work. I hate to use chemicals, as we feed the birds & critters that come into our garden. Does anyone know of something safer I can use? I have a 1/3rd of an acre of gardens, so it is impossible to pick them off of the plants and drown them in soap. We have also used the grub insecticide in our lawn and garden and still to no avail.

Negative traceylynnf On Jul 29, 2006, traceylynnf from Cement City, MI wrote:

This bug destroys any plant in its path!! How do you get rid of it- I hate those nasty bags that you hang up in your yard, so I just squash them when I see them.
note: August 15, 2006: I have found one thing, by accident that is really wierd, but it works! We had a large weather -resistant citronella candle lit, sitting on our deck table. The mosquitos finally chased us indoors nd I blew it out but left it sitting out on the table. The next morning it was full of dead japanese beetles, stuck in the wax. Seems they like the melty wax , land in it and can't get out! Sounds cruel but no crueler than eating my plants. I light a candle every night and the next morning there are 8-12 beetles gone; not that many, but every little bit helps.

Negative chicochi3 On Jul 30, 2006, chicochi3 from Fayetteville, AR
(Zone 6b) wrote:

These horrible little creatures eat--no devour--my favorite plants for two months out of the year. Die, beetles, die!

Neutral UziMike On Aug 2, 2006, UziMike from Reynoldsburg, OH
(Zone 6a) wrote:

I have found using a systemic treatment like the Bayer 3 and 1 product works. Out of 11 rose bushes, I found two one day and then were gone/never to return the next day. Then I found only one leaf of a rose bush with typical JB type damage, but then never noticed any other damage. I know they are in the area still but I effectively have them to stay away or die, if they come around my gardens.

Negative TheHeff On Aug 3, 2006, TheHeff from Cedar Rapids, IA wrote:

These bugs have destryed my hollyhocks and hardy hibiscusplants along with the roses. Unfortunatly this has been determined to be the worst infestaion of japanese beetles yet. I don't think that there is really anything that can get rid of them completely. I have atleast 20 of these bugs on 1 flower.

Negative patmac555 On Aug 4, 2006, patmac555 from Hamburg, NY
(Zone 5a) wrote:

I have a Harry Lauder Walking Stick (Twisted Filbert) and the JB's invaded the plant and I used a pan with soap mixture and flicked them off and they died. Worked well but later on I had to spray the plant with Sevin just to make sure.
The walking stick is a focal point in my garden and I just didn't want to lose it to the bettles..... They were very proliferous this year, even attacked the roses and I used the same technique..... I learned this technique from the Home Extension Service...in that they don't really advocate the use of pesticides.
I love to see what you all write on different subjects it really is informative. Thanks, patmac555

Negative lemmons75 On Aug 8, 2006, lemmons75 from Rock Hill, SC wrote:

I myself have a dealing with this nasty bugs.It started with my stawberrys and moved to my cosmos and anything else it could get its mouth on.I put up two beattle bags up about a month apart with some releaf, but they still ate on my flowers.I haven't seen any of them in a couple of weeks now so I hope the little leaf eating bugs have moved on.

Negative RichInNC On Aug 9, 2006, RichInNC from Winterville, NC wrote:

I have successfully killed the beatle by spraying a
liquid solution of Sevin on all my flowers,
shrubs and trees.

Negative Jax4ever On Aug 11, 2006, Jax4ever from Boxford, MA
(Zone 6a) wrote:

The biggest mistake I ever made was to purchase a Japanese Beetle trap, the kind that uses a sex lure bag. Before the trap, I only had a few beetles... when I got the trap, even though I set it over 60 feet from the garden, I had an infestation times ten! Beware!! I hand-picked the beetles for the next two seasons, and I have not seen one this year. I grow a very bird-friendly garden, and I believe Robins and Phoebees are killing the rest.

Negative audreyannewert On Aug 13, 2006, audreyannewert from Athol, MA wrote:

These creatures have chomped on everything in my yard. In the past, I've had them only on rose bushes but this year it's been everything from corn to new sugar maples. It's impossible to treat everything with sevin. Is there a certain weather condition that makes the infestation worse, such as alot of rain?

Neutral rathkyle On Aug 14, 2006, rathkyle from Oneida, NY
(Zone 5a) wrote:

I have been waging warfare on Japanese Beetles for years now. They are the BIGGEST problem in my garden ... mostly because I have a ton of roses. They also love other plants as well and have been feasting lately on my Canna Lilly plants.

I have tried beetle bags in the past, but it made the problem MUCH worse. I have been told by other gardeners and have read on other web sites that these bags cause more of a problem than they solve, however, some people have much luck with them. I don't recommend them though.

I have also tried chemical sprays and more environmentally friendly sprays, They work for a short time, but still the beetles come. I have also tried grub killers in my lawn in both fall and spring. I believe it has helped somewhat, but they are still here.

Since I have waged war on these nasty bugs, I have done as much research as I can. I like things that are safe for the environment ... so this year and next I will be trying two things. First, I will be using Milky Spore Treatment. This is applied to areas in a grid like pattern. This treatment is supposed to last for 10 years or more, increasing as time goes by. It kills the grubs in the larvae stage. I'm hoping my neighbors will try it as well, so we will have our areas covered!! This is my fall treatment. :)

Second, I will be buying beneficial nematodes to add to the garden areas. This is applied by mixing with water and spraying on the garden. I will be using this in the spring when the soil warms. The nematodes are supposed to kill the larvae as well, but will not harm beneficial insects.

This is my plan, we will see what happens, can let you all know next year!!

Neutral LostIndian On Aug 16, 2006, LostIndian from Algonac, MI wrote:

I have some kind of yellow wild flowers growing next to some kind of hedge bush, of which, the JBs severely attacked the flowers leaves. I did nothing to stop them and that is the only plant which was attacked. This may be due to the rapid expanse of the wild flowers and the vast amount of leaves available. Maybe the critters ate themselves to death. I haven't seen any in two-three weeks.
I like the idea of a "bird garden". In fact, we have had so many Robins and Blue Jays around this year, they may be the solution of the JB problem. Me thinks me will place a couple of bird baths out to intice more birds next year.

Negative valliebeth17 On Feb 23, 2007, valliebeth17 from Crown Point, NY
(Zone 4b) wrote:

JB have been a plague in my gardens my entire life. They seem particularly fond of roses, raspberries, hollyhocks and grape vines. Last years my grandfather used Sevin on his raspberries, and found exactly two beetles in the entire patch the whole year. I intend to use Sevin on my roses this year.

Negative IAJo On Mar 9, 2007, IAJo from Peosta, IA
(Zone 4b) wrote:

This is the most horrible, destructive bug ever! They were even attacking my blue spruce, black spruce and arborvitae! The only thing I have not had eaten by them was the leaves on our 2 oak trees. Every pesticide that will kill them, washes off in rain or dew dilutes it so it is very expensive due to constant reapplications. These nasty insects appear to come in droves from the soybean fields of farmers to the south of our home, starting in late June and are here until after the 1st hard frost. I read that you are suppose to apply nemotodes and milky spore to your lawn in early spring before the grass turns green to kill there eggs and larvae, so I am going to try it this spring. Will keep you posted on wether it works or not.

Negative pmgflowers On Apr 7, 2007, pmgflowers from Decatur, GA
(Zone 7b) wrote:

Encountered this Evil Creature for the first time in July 2005, munching my crape myrtles. After googling, fixed soapy solution in a large yogurt container and spent the next week-10 days going out multiple times a day and knocking every one I could find into the soup (hundreds by the time it was over). Trees were young enough I could still reach nearly to the top, and I got very good at sneaking up on the Evil Creatures. (I work from home, and some days it doesn't take much justify taking a break.) With trepidation, set out a couple of the bag traps also, and caught hundreds. When there was a breeze, I saw fewer beetles in the trees and more in the traps; I'd been worried that the traps would just pull in more from surrounding n'hood, but don't think that happened. Patrolled the rest of the premises vigilantly, but only found a few on some four o'clocks in the backyard; they did not find my tomatoes & peppers (30 feet away), or daylilies or hostas. (Too bad they don't eat privet, English ivy, or bamboo.)
The next year they showed up again but in far fewer numbers. Set traps and caught lots; trees too tall to hand pick much.
Those crape myrtles are one of my few successes in seven years of Horticulture Gone Terribly Wrong, so I'm a little worried about what this summer might bring.

Neutral mscheinost On Apr 18, 2007, mscheinost from Henderson, KY
(Zone 6a) wrote:

I have had major problems with this one. Last year was the first year I got any nectarines. I reached up for one and got a hand full of JB's. I have done the Milky Spore thing, but it is expensive, especially for a large area. It is suppose to be put down three seperate times, for two years. My understanding is that it takes a couple of years for it to really establish.

This year I'm going to try and cover the fruit trees with floating "row cover" to keep them off during fruiting. I guess they aren't suppose to be able to climb up under the netting. We'll see.

Negative scherry21 On May 23, 2007, scherry21 from Morrow, OH wrote:

I hate these bugs! They eat the leaves off my plants
I was able to kill some of them by knocking them into a jar of soapy water and they drowned immediately but they are hard to keep up with.

Negative k_saintlouis On Jun 6, 2007, k_saintlouis wrote:

in 3 days, my zelkova went from spectacular to awful! hello JBs. they haven't moved to the little-leafed lindens yet...if only i could stay home from work! EVERYTHING can change in a single day! has anybody tried systemic treatments for plants too large to hand pick? in my 100-year old house, my water pressure won't even allow me to get sevin up to the top where the critters are hanging out. our botanical garden says NEVER introduce traps, but what about other, smaller plants that will lure them down so i can hand pick them off - any suggestions? local horticulturalists have also told me that eliminating grubs is a tiny step as the beetles have been known to move up to a mile in a day for the tastest treats ... my trees!!

Neutral Valsrich On Jun 17, 2007, Valsrich from Flowery Branch, GA wrote:

I moved to Gainesville, GA in 1971. I had never seen a JB before then. I was amazed! Anyway, I had been getting Organic Garden magazine and I saw an ad for Milky Spore. Folkes, this is the answer to your problems. In those days I was quite broke and so I could only buy a little bit. But I placed it as far as I could go and I used a larger grid than was recommended. The first year there was not much difference. However, 25 years later that property was JB free! Also, something else I have noted. When I moved to my present property I brought several plants with me. I have not had a JB invasion yet, altho I do notice a few here and there. Don't worry about your neighbors buying it. It will spread. Not fast, but it will spread. Let's face it, just how fast can a little grub travel underground. And he has to travel to spread the spore. They took Milky Spore off the market for awhile and I kept inquiring "why"? No one could tell me. I even called Organic Gardening AND the local ag. people. No luck. Finally, I saw it again, years later! One person told me they took it off the market because it didn't work. Well, I believe they took it off the market because it worked TOO well. Also, I have only been able to find it in feed stores. Your local Home Depot and Lowes does not carry it.

Negative lee_ro On Jun 20, 2007, lee_ro from Raleigh, NC wrote:

They're here. The awful insects have arrived to munch on Raleigh NC, harkening the impending summer season and battling me as I fight for the salvation of my beautiful hardy hibiscus. I have many different plants in my garden, but for whatever reason they love to destroy my very favorite hibiscus plant. Last year (my 2nd yr tending to my current garden) they also attacked my climbing hydrangea, completly skeletonizing it before I finally broke down and sprayed Sevin on it (the only chemicals I had used thus far in my modest, though lovely, garden had been some occasional Miracle Grow). Before the Sevin I had tried the beetle traps but they weren't working quickly enough. The awful JBs left instantly as soon as the Sevin was introduced, though my Climbing Hydrangea was pretty much done for the season.

My beautiful wine-colored hardy hibiscus has been thriving in a damp area of my yard; just last week I counted appx 60 buds on it. Each bloom lasts a day, and is almost the size of my head. Last week I started noticing my dreaded enemy showing up on my beloved shrub. The JBs love the leaves in particular-- just today I watched incredulously as they did rather unholy things on the broad leaves before I knocked them to the ground and crushed them mercilessly after spraying them as they basked on the leaves. I introduced chemicals earlier this year; the Sevin is definitely helping. I've been having to reapply frequently as it seems to easily wash off when it rains.

If I can recall correctly from last year I think I remember the JBs were gone after a few weeks of terrorizing my garden. I'm hoping to put up the good fight until they find some other poor garden to destroy.

Positive nursery4u On Jul 1, 2007, nursery4u from Liberty, NC
(Zone 7b) wrote:

Yes, like everyone else, the beetles have invaded en masse'. Last year was our first experience with them, having moved the nursery up from Florida (that has every other bug in the world... except these), and we were surprised how selective they seemed to be... but they did cause an incredible amount of damage.

We learned from last year, and to our surprise, they have hit almost everything in the beds and containers, even oaks and some of the conifers...

We have a large bird and frog population, and try not to use too many chemicals, so we have a control strategy for the invaders. Our strategy is firstly to squish them as we patrol the grounds. Then when there are concentrations of beetles, we spot-spray with a mix of Sevin and Malathion. The Sevin works well, but adding the Malathion helps to keep other bugs down, and adds a disagreeable taste for the deer that sneak up on us...

We also have several of the bug/scent traps set up in key locations. These work very well for us, and we change the bags every couple of days. The beetles are suppose to be drawn to the traps from over a quarter acre away or whatever, and thats ok with us. The areas around the traps tend to collect the eaters, so our spot-spraying helps there.

Now last year, at mid-infestation, we were filling two bags a day! This year, we havent filled a single bag, but the bags do need to be changed and kept clean and fresh or it deters the beetles. We think our control program last year has lessened the beetle population for this season, and with the combination approach, we are somewhat optimistic.

A friend of our is trying the Milky Spores, and we might as well. Someone mentioned friendly menatodes... we will look into that as well.

Hope our notes helps...

Neutral lbveas On Jul 5, 2007, lbveas from Whitmore Lake, MI wrote:

I've used GrubX with good results on a city lawn in the past. Now I live on 3 acres and had severe damage from these miserable @##!!*@#! on roses, day lilies, red bud trees, maple tree, apple trees and especially raspberries and other plants as well. I used beetle traps but felt they attracted more than they trapped. Our Extension office and Master Gardener instructor recommended against using them unless you could locate them in your neighbors yard. Last July I applied grubX to as large an area as I could afford. Also not using traps this year. So far beetle activity is very low in the areas that had GrubX applied. I spray with Sevin weekly and started as soon as I saw the first beetle. Also hand pick them and drop them in soapy water. I will try the soapy water spray. I fear the battle is just beginning. Last year the main invasion didn't start until mid July.
Larry Hamburg, MI (near Ann Arbor)

Neutral Mrs_Mac On Jul 6, 2007, Mrs_Mac from Athens, AL
(Zone 7b) wrote:

The beetles have arrived in Alabama also. My Newport Plum tree's leaves look like lace. The JBs also LOVE crape myrtles and between the tree and the myrtles, they mostly leave our other plants alone. I spray Sevin dust on the plum tree only and pick bugs off the rest of the plants since I feed lots of birds.

We tried two of the traps a couple of years ago and I must say that they provided fun for the entire family. Every evening, we would all go out to see how many JBs we had. In a day's time, the bags were so full that the weight would pull the bag down to the ground. And all the beetles were crazy for love!

Negative roziebudzz2 On Jul 6, 2007, roziebudzz2 from Dundee, IL wrote:

Where did these things come from. I never saw so many and they are having a feast on everything in my garden. I'am in a new home of only 3 yrs. and trying to get my garden established and these guys are eating everything in site. The odd thing is we had the grub control put down for the first time (just in case) this year and I have thousands of beetles. Now What do I do besides spray till I'am blue in the face?

Negative daistuff On Jul 11, 2007, daistuff from Cary, IL
(Zone 5a) wrote:

They are eating my new dogwood and pear trees, along with my roses. I've been picking and drowning in soapy water since my yard is small. They're easy (and fun?!?) to pick. They either drop to the ground as soon as they see you, or they plant one sticky leg on the leaf and hang on for dear life. So I hold my bowl of soapy water under the leaf and usually the fools just slide right in. If they choose to clamp on, I cut the leaf off and push them into the water with my clippers. My son loves to count how many soapy beetles are wiggling in the cup. I've gotten dozens, and this morning I couldn't find a single one to catch. I must admit, I was a little disappointed (LOL).

Negative huggle002 On Jul 16, 2007, huggle002 from Fort Edward, NY
(Zone 5a) wrote:

UUGGH-Went away for 2 days-came home to a once stunning clawfoot bathtub FULL of Calla liles reduced to shreds by these nasty creatures.

They went to work on a number of my roses too. They are everywhere in my garden now....I have just sprayed all of my Callas and roses with Sevin.

Negative YangMetalRat On Jul 18, 2007, YangMetalRat from Frederick, MD
(Zone 6b) wrote:

This is my 3rd summer tending my garden and the 1st summer that the JBs have not ravaged everything from roses to cosmos to yarrow. In fact, they're so few in number now that it's tempting to forget about them - but I continue to dispatch every one that I find! I've not known whether to attribute the low numbers to unfavorable weather conditions for the grubs in the last year (were they? I've no idea what the grubs need) or to my eradication efforts last year and my ongoing obsession with killing every grub I came across in the course of removing the lawn and digging and planting a cottage garden. (I fed every grub to my birds - yum!) I applied milky spore to my garden in March this year, though my nurseryman told me that m/s is most effective in the period after the eggs hatch and the larvae feed heavily (August until freezing). I found emerging JBs in the soil this year in mid-June, and by late June was going on patrol with soapy water 2-3x a day ... but I noticed that the beetles this year are very small, half the size of last year's beetles. After 10 days of soapy water patrol, I am finding only 3-4 beetles per day in the garden. I am cautiously optimistic that my efforts have paid off.

On the other hand, since neither of my neighbors treated their gardens and both have lawns (whose roots are just what grubs like best, no?), I would think the beetles would have carried on as they did every year and the low number of smaller beetles this year is a result of those unfavorable weather conditions I was wondering about. I will probably offer to treat my neighbors' gardens next month with milky spore ... a worthwhile investment when I consider how much $$$ I have poured into the plants in my garden!

I hung a pheromone trap at the far end of the garden last year and even though it was vile it did draw them in and away from my prized plantings. I also used Sevin on one rose bush last year and it certainly worked, but I am worried about the disappearance of honeybees and CCD (colony collapse disorder) and want to make things as easy as possible for these creatures. My garden this year has been a haven for bees of all kinds, including hundreds of honeybees, and applying Sevin is simply not an option.

Finally, has anyone had definite success with the nematodes? I've heard that applying both nematodes and milky spore is counter-productive, since the m/s is spread by the grubs and the nematodes kill the grubs before they have time to travel. Don't know for a fact that this is so, but if anyone out there knows about this - do tell!

Neutral lmbs19 On Jul 7, 2008, lmbs19 from Wales, MA wrote:

I have thousands of these bugs in my yards every day, I have tried Seven nope nothing its like they like the stuff, the only thing killing them is my pool, which my boys should be swimming in but we can not go out amnd enjoy our yard, my garden needs to be weeded whats peft of it. what can I do ? HELP

Negative Cheryl_103 On Jul 11, 2008, Cheryl_103 from Pittsburgh, PA
(Zone 6a) wrote:

This is my garden's third year, but the first I've ever seen JP's. They eating all of my purple coneflower petals!! They also seem to like the cilantro flowers.
I've noticed a lot of honey bees on the coneflowers, so I dont' want to use Sevin.
I'll try the Bag-a-Bug & also knocking them into soapy water.
We've got lots of birds, but they seem much more interested in my lawn than my flower garden.

Negative Bookerc1 On Jul 16, 2008, Bookerc1 from Mackinaw, IL
(Zone 5a) wrote:

Awful things, they eat everything! They started on the blackberries, and moved on to the roses, dahlias, yarrow, phlox, and vegetable garden.

My BIL has a too-true saying about them: where one is feeding, two are breeding. This year is the worst I've seen!

Negative Lauren_Byron On Jul 17, 2008, Lauren_Byron from Byron, IL wrote:

Hi,
I'm new here..... we are having another bad year with JB's. They were so bad last year..... they almost killed our cherry tree, I think their back to finish the job and to take the apple trees with it.

I am thinking about the pressure washer and also "House Wash". They say it doesn't hurt the plants around the house, so I thought I would power wash the JB's.

I thought about a mixing different oils and pepper, but I have to research on dog safety. I have a handful of large dogs that love eating grass and dirt...... so that's a major concern for me. They have a product that you pour around the roots of the tree and the tree absorbs the chemical and the JB's supposedly won't eat from the tree...... but it takes about 4 bottles per tree, depending how tall (usage is proportional to height of tree). After determining how much we would need, it was very expensive.
Good luck everyone...... what do you guys think about "House Wash"? Bet it knocks the wings right off the little beasts..... BTW..... they bite!
Lauren

Negative bradysgrama On Aug 8, 2008, bradysgrama from Morrison, IL wrote:

This year has been just awful in our part of Illinois for the Japanese Beetles. There has got to be a soapy mixture to kill them but no one seems to have the correct mixing. I know Lemon Dish soap and water but do not know the right amounts. Does anyone have that information for me cause I refuse to use chemicals. Also, I went to pick off a dead moss rose and here a Japanese beetle was imbedded in it chomping away. I am about to get rid of all my beautifu l flowers and use decorative rock instead. Let them little buggies chomp on those. They are also devouring my petunias if the flower part is laying on a bush, otherwise, they are leaving them alone. Can anyone tell me why that is? Also, some tiny little caterpillar not even an inch long was on my hanging planters (begonias) and it was devouring my leaves, I saw a moth recently on a leaf but I tried to destroy it and it dropped down into the plant and at that time the plant was super healthy, not anymore after this moth or caterpillar got going and it only took a short time to destroy the beautiful begonia (hanging plant) Any help I sure would appreciate it. Thanks

Negative crimsontsavo On Aug 13, 2008, crimsontsavo from Crossville, TN
(Zone 7a) wrote:

They drenched our property last year (MILLIONS). Not as bad this year...but i haven't seen a fully opened althea bloom this year because of them.

Negative PinkysPlants On Aug 20, 2008, PinkysPlants from Thomasboro, IL
(Zone 5b) wrote:

These guys are my #1 enemy!!

These guys eat my plants ragged every year! They have destroyed clematis, roses, butterfly weed, bee balm, you name it!!!

And they fly into you while you are working outdoors too!!

Negative DMgardener On Jan 2, 2009, DMgardener from (Daniel) Mount Orab, OH
(Zone 6b) wrote:

This is NASTY!!! Fortunatly, the yearly invasion only lasts 1 month. And that month is June. The month EVERY plant is making exellent growth on leaves and flowers. And they make EVERY thing look like MESH!!!!!!!!:( :(

Negative LadyAshleyR On Jan 26, 2009, LadyAshleyR from Oakland, MD wrote:

This is an introduced species that has become a real pest.
They eat up practically everything.
If you have them, I suggest stopping by your local walmart, and buying some hormone traps.
The beetles fly into them, and can't get back out.
Just make sure you dont leave them up for too long, or the beetles will chew through the bottom, and get out.
Either that, or empty your bag, and find a way of disposing of the beetles, without any of them flying away.

Negative firefly_in_nh On May 6, 2009, firefly_in_nh from Deerfield, NH
(Zone 5b) wrote:

I've lived in my current home only a year, and last summer the Japanese Beetles weren't too bad, only damaging the blackberries and some of my roses. I'm not sure how useful this tip is for most people but my Jack Russell Terrier loves the critters and eats them by the hundreds! I let her loose in my rose garden and she stripped them bare. She patrols the lawn religiously and devours any beetle she finds, and in fact if I call her over to "find the bugs", she knows exactly what she's looking for!

Neutral Ed_the_Merlin On Jul 6, 2009, Ed_the_Merlin from Ballwin, MO wrote:

I have battled this little bugger for years and have found that the traps work the best in conjucnction with spraying. So far this year, actually a week or so since they appeared I have bagged over ten quarts of them. My flowers have been virtually untouched. It doesn't matter where they come from or if I'm attracting them...if they go into the trap that's less to lay eggs and produce more larvae. I just ordered two more. Fresh bait works the best each year. I tried Milky Spore years ago and it was ust a waste of money...IMHO.

Negative mommy2 On Jul 6, 2009, mommy2 from Diamond, OH wrote:

I dont know what to do...i am afraid to use chemicals in my yard because i have 2 young children & 2 dogs...i use the beetle bug traps...the ones with the bags and the little disc that draws them in and it worked great last summer but this summer it doesnt seem to be helping at all....i cant take the kids outside because they swarm them and the dogs. We cant even use the pool, play in the sand box or on the swingset....its horrible....any suggestions or anyone know how long before these things go away!!!??

Negative Gardenobsessed On Jul 7, 2009, Gardenobsessed from Ithaca, NY wrote:

Last year, 2008 was HORRIBLE. These critters are really the bane of one's existence. I gave up last year. Here in
Ithaca, NY, you can start looking out for them about June 30, but they tend to disappear by the second week of Aug. I hear milky spore really works, but you have to give it 3-4 years. I guess the multi-pronged approach is the best answer ...and pray real hard that they will have mercy on us.












Negative stormyla On Oct 20, 2009, stormyla from Norristown, PA
(Zone 6b) wrote:

For years we've had horrible infestations of these beetles. Last fall I applied Milky Spore to the entire property and also drenched beneficial nematodes into the soil. This year there were virtually no beetles here and I thought that the treatments had been effective. That is, until friends who did nothing to their properties told me that they had no beetles this year either.

Negative belston23 On Mar 29, 2010, belston23 from Minneapolis, MN
(Zone 4a) wrote:

This Nasty little creature has destroyed my beans. I have learned to NOT use the trap. It only makes it worse. The only thing I could do is try to kill them individually when I saw them on the plant. I pick them off individually and crush them, or when there are a lot of them, I get a container of water with some dish soap and just nock them into the container and let them drown. They turned my leaves into spider webs.

Negative rabbitsdiner On May 9, 2010, rabbitsdiner from Carmel, IN wrote:

I kill grubs in the ground, but they just fly in from elsewhere. I use systemic insectide granules on my roses. It works wonderfully for the foliage, but not the blooms. Picking them off is helpful at some times, but hopeless when they really infest. I cut some flowers at budstage and bring them inside to enjoy. The rose'The Fawn' doesn't get attacked quite as badly as most of the others. 'Double Knock' out does very well.

Negative SkyWolf07 On May 23, 2010, SkyWolf07 from Meridianville, AL wrote:

I HATE these nasty little things. They may be pretty, but they killed my 2 beautiful Japanese Plum trees almost overnight.

Positive greenbike7 On Jun 14, 2010, greenbike7 from Fortson, GA wrote:

I have used everything they make, and then I found " Bayer" it's a systemic you treat the ground with before they come out, grant it I have alot of areas and cannot use it everywhere, but in my beds that they can strip in one day I use it and the bag a bugs work great around other areas. This year I found they no longer make the bags, it's a green plastic cylinder with the same yellow holder for the scent but these are so much better as they have holes and let the rain out and not as much of a smell!! Put at least 10ft. from plants as they will be drawn to it instead of the plant. Now you will still find some on plants but if you could only see how many bugs are in 5 bag a bug containers you wouldn't believe!!

Negative KayMN On Jul 19, 2011, KayMN from Robbinsdale, MN wrote:

My "thundercloud purple leaf plum" tree is covered with these nasty little beetles! I have 2 of these trees! The trees are only 2 years old so they are small enough to maybe manage for now. They have chewed through nearly 1/2 of the leaves.

I gave these little guys a nice morning bath in my soap pail. I got maybe 200 of them in about 15 minutes. I'm trying to stay away from the chemicals. I feel better knowing that I put some to rest.

Negative pinochio On Sep 11, 2011, pinochio from Hampshire, IL
(Zone 5a) wrote:

Can anyone give me suggestions on how to get rid of these. Every year they devour my cherry tree, roses, berry bushes, and all trees around, even my butterfly bush. I am trying to stay chemical free in my yard, but I'm at wits end. I have never hated any bug like these. I will do any thing to destroy them. They couldn't possibly be good for anything.

Negative julietomblin On Sep 12, 2011, julietomblin from Ashton, IL wrote:

yes these bugs have destroyed my marigolds. the neighbor who grows roses from across the street put out those bags and she was filling them twice a day. i didnt start seeing them until those bags were put out and now i dont have a single bloom left. im hoping next year that they stay away.

Neutral rosada On Jan 27, 2012, rosada from Cedar Falls, IA
(Zone 4b) wrote:

This may help some with smaller gardens....
1.) place a white bucket or milk jug with water in it and ripe fruit like banana peels and mango in it as a lure under favorite shrub or tree. Beetles can't fly out of the milk jug once inside but add a small amount of dish soap to an open white bucket. These won't draw beetles from miles around like the pheromone traps do.
or
2.)One of the Universities recommended [instead of using commercial pheromone traps which draw in more beetles than they can kill] to place a pheromone trap "over" a basin filled with soapy water with a "white bottom". [use a white plastic bag to line the basin] .Some people said the pools fill with beetles which drown in the soap. Only problem with this second method is it will draw Japanese Beetles into your yard from neighboring areas however it will kill more beetles so fewer are laying eggs every three days. [I just wonder if they will sink or climb on top of each other]

3.) In early morning, before sunrise you can spread a sheet under small trees or shrubs and shake the plant. Japanese Beetles will fall down onto the sheet which you then gather up and dump into a bag.

Negative creash On Apr 23, 2013, creash from Logansport, IN wrote:

Some years are much worse than others where I live. With most pests, there are completely nonchemical things that can be done to get rid of them. I don't use any chemical fertilizers, herbicides, or pesticides, only completely natural methods. However, these little buggers defy virtually every method I attempt on them. Any ideas?


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