Orange Daylily, Tawny Daylily, Ditch Lily
Hemerocallis fulva

Family: Hemerocallidaceae (hem-er-oh-kal-id-AY-see-ee) (Info)
Genus: Hemerocallis (hem-er-oh-KAL-iss) (Info)
Species: fulva (FUL-vuh) (Info)
Synonym:Hemerocallis fulva var. fulva
» View all varieties of Daylilies
View this plant in a garden

Height:

24-36 in. (60-90 cm)

Spacing:

15-18 in. (38-45 cm)

Hardiness:

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:

Full Sun

Sun to Partial Shade

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

By dividing the rootball

Bloom Time:

Early (E)

Reblooming (Re)

Flower Size:

Large (more than 4.5" diameter)

Blooming Habit:

Diurnal (diu.)

Flower Type:

Single

Bloom Color:

Orange

Color Patterns:

Blend

Flower Fragrance:

Slightly Fragrant

Foliage Habit:

Semi-evergreen (sev.)

Ploidy:

Unknown - Tell us

Awards (if applicable):

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

, (3 reports)

Logan Lake,

Villers-lès-nancy,

Auburn, Alabama (2 reports)

Birmingham, Alabama

Cullman, Alabama

Gadsden, Alabama

Huntsville, Alabama

Madison, Alabama

Mobile, Alabama (2 reports)

Montgomery, Alabama

Piedmont, Alabama

Scottsboro, Alabama

Vincent, Alabama

Flagstaff, Arizona

Bismarck, Arkansas

Fayetteville, Arkansas

Sacramento, California

Santa Barbara, California

Temecula, California

Wildomar, California

Colorado Springs, Colorado

Denver, Colorado

Laporte, Colorado

Bear, Delaware

Newark, Delaware

Ocean View, Delaware

Deltona, Florida

Gibsonton, Florida

Lake City, Florida

Panama City, Florida

Tallahassee, Florida

Welaka, Florida

Braselton, Georgia

Canton, Georgia

Cordele, Georgia

Cornelia, Georgia

Hawkinsville, Georgia

Homer, Georgia

Kingsland, Georgia

Roopville, Georgia

Snellville, Georgia

Stone Mountain, Georgia

Bensenville, Illinois

Carterville, Illinois

Champaign, Illinois

Cherry Valley, Illinois

Chillicothe, Illinois

Hampton, Illinois

Hinsdale, Illinois

Mt Zion, Illinois

Niles, Illinois

Spring Grove, Illinois

Farmersburg, Indiana

Logansport, Indiana

Macy, Indiana

Newburgh, Indiana

Solsberry, Indiana

Cedar Rapids, Iowa

Davenport, Iowa

Iowa City, Iowa

Nichols, Iowa

Brookville, Kansas

Barbourville, Kentucky

Calvert City, Kentucky

Ewing, Kentucky

Fedscreek, Kentucky

Hebron, Kentucky

Lexington, Kentucky

Louisville, Kentucky

Mc Dowell, Kentucky

Melbourne, Kentucky

Paintsville, Kentucky

Salvisa, Kentucky

Smiths Grove, Kentucky

Taylorsville, Kentucky

Baton Rouge, Louisiana

Coushatta, Louisiana

Hessmer, Louisiana

Monroe, Louisiana

Zachary, Louisiana

Durham, Maine

Fort Kent, Maine

Lisbon, Maine

Cumberland, Maryland

Laurel, Maryland

Pikesville, Maryland

Amesbury, Massachusetts

Bridgewater, Massachusetts

Brimfield, Massachusetts

Mashpee, Massachusetts

Roslindale, Massachusetts

Salem, Massachusetts

Sandwich, Massachusetts

Weston, Massachusetts

Woburn, Massachusetts

Caro, Michigan

Davison, Michigan

Dearborn Heights, Michigan

Detroit, Michigan

Eastpointe, Michigan

Grand Rapids, Michigan

Mancelona, Michigan

Mount Morris, Michigan

Pinconning, Michigan

Plainwell, Michigan

Royal Oak, Michigan

Saginaw, Michigan

Saint Clair Shores, Michigan

South Lyon, Michigan

Traverse City, Michigan

Hibbing, Minnesota

Minneapolis, Minnesota (3 reports)

Sturgeon Lake, Minnesota

Gulfport, Mississippi

Marietta, Mississippi

Bates City, Missouri

Cole Camp, Missouri

Conway, Missouri

Kansas City, Missouri

Saint Louis, Missouri

Springfield, Missouri

Omaha, Nebraska

Scottsbluff, Nebraska

Colpitts Settlement, New Brunswick

Auburn, New Hampshire

Exeter, New Hampshire

Greenville, New Hampshire

Milford, New Hampshire

Mont Vernon, New Hampshire

Munsonville, New Hampshire

Nashua, New Hampshire

North Walpole, New Hampshire

Neptune, New Jersey

Vincentown, New Jersey

Moriarty, New Mexico

Roswell, New Mexico

Santa Fe, New Mexico

Ballston Spa, New York

Bronx, New York

Churchville, New York

Dundee, New York

Eden, New York

Elba, New York

Greene, New York

Hornell, New York

Jefferson, New York

Kew Gardens, New York

New Hyde Park, New York

Nineveh, New York

North Tonawanda, New York

Oceanside, New York

Ogdensburg, New York

Penn Yan, New York

Rochester, New York

Saranac Lake, New York

Saratoga Springs, New York

Syracuse, New York

West Kill, New York

Burlington, North Carolina

Concord, North Carolina

Denver, North Carolina

Elizabeth City, North Carolina

Fuquay Varina, North Carolina

Graham, North Carolina

Hillsborough, North Carolina

Lake Toxaway, North Carolina

Bucyrus, Ohio (2 reports)

Chillicothe, Ohio

Cincinnati, Ohio

Dayton, Ohio

Defiance, Ohio

Dundee, Ohio

Elyria, Ohio

Lynchburg, Ohio

Madison, Ohio

Newark, Ohio

North Ridgeville, Ohio

Hulbert, Oklahoma

Ninnekah, Oklahoma

Greater Sudbury, Ontario

Baker City, Oregon

Blodgett, Oregon

Altoona, Pennsylvania

Doylestown, Pennsylvania

Irwin, Pennsylvania

Langhorne, Pennsylvania

Millersburg, Pennsylvania

Pottstown, Pennsylvania

Valencia, Pennsylvania

Watsontown, Pennsylvania

West Chester, Pennsylvania

West Warwick, Rhode Island

Conway, South Carolina

Prosperity, South Carolina

Summerville, South Carolina

Wagener, South Carolina

Clarksville, Tennessee

Clifton, Tennessee

Elizabethton, Tennessee

Hendersonville, Tennessee

Hixson, Tennessee

Memphis, Tennessee

Murfreesboro, Tennessee

Pocahontas, Tennessee

Arlington, Texas

Belton, Texas

Channelview, Texas

Colmesneil, Texas

Conroe, Texas

Coppell, Texas

Dallas, Texas (2 reports)

Desoto, Texas

Fate, Texas

Fort Worth, Texas

Gainesville, Texas

Galveston, Texas

Gause, Texas

Gilmer, Texas

Kingsland, Texas

Leander, Texas

New Caney, Texas

Palestine, Texas

Port Neches, Texas

Rowlett, Texas

Centerville, Utah

Salt Lake City, Utah (2 reports)

Tremonton, Utah

Montpelier, Vermont

West Dummerston, Vermont

Fancy Gap, Virginia

Jonesville, Virginia

Pulaski, Virginia

Roanoke, Virginia

Suffolk, Virginia

Virginia Beach, Virginia

Wytheville, Virginia

Kalama, Washington

Spokane, Washington

Stanwood, Washington

Twisp, Washington

Liberty, West Virginia

Peterstown, West Virginia

Dallas, Wisconsin

Delavan, Wisconsin

Ellsworth, Wisconsin

Marinette, Wisconsin

New Lisbon, Wisconsin

New London, Wisconsin

Ogema, Wisconsin

Pewaukee, Wisconsin

Pulaski, Wisconsin

South Milwaukee, Wisconsin

Casper, Wyoming

Kinnear, Wyoming

Riverton, Wyoming

Sheridan, Wyoming

show all

Gardeners' Notes:

27
positives
6
neutrals
6
negatives
RatingContent
Neutral

On Apr 30, 2014, coriaceous from ROSLINDALE, MA wrote:

H. fulva var. fulva is widely naturalized in North America, and often marks the sites of old homesteads. Tough and vigorous, it can bloom in more shade than other daylilies, but like them it performs best in full sun. It blooms for 2-3 weeks, and its season is early, shortly after Stella blooms. It does not repeat. Scapes are generally 3-4' tall. It is hardy to Z3.

It is a sterile triploid and does not set seed, but in the garden it spreads aggressively by long underground rhizomes (to 2'). It is not a good neighbor to other plants in a mixed border, and it is best planted in a bed by itself where its spread is confined by mowing or a soil barrier. Unlike most daylilies, it can regenerate from rhizome fragments without a crown attached. If you want to reclaim a bed that it's... read more

Negative

On Jun 20, 2013, limabean from Exeter, NH (Zone 5b) wrote:

I thought I was crazy when it occurred to me that these daylilies were multiplying faster and faster as I tried to dig them out. And where have my scores of other much more lovely daylilies gone? They have been convinced by this INVASIVE common daylily not to be showy. They joined ranks and reverted back to roadside refuse. Ugh.

Positive

On May 7, 2013, kenzie54 from new glasgow
Canada wrote:

plant information was very informative.

Positive

On Mar 30, 2013, Gunvy0407 from Glasgow, DE wrote:

I had two huge mulched areas on either side of my driveway that were so big that it would have cost a fortune to plant into regular gardens. I solved the problem by planting these lilies. I bought 100 little fans from http://www.classygroundcovers.com and planted them in late spring 2011. I was surprised that I got flowers that first year; it was blazing hot that summer with very little rain, and I didn't think they'd survive. Summer 2012, the foliage filled out thickly, providing a great ground cover, as well as pretty orange flowers. I am hoping that this year, after a good dose of fertilizer last week, they'll be even lovelier.

Positive

On Mar 18, 2012, KariGrows from New Lisbon, WI (Zone 4b) wrote:

I Love this plant for its ability to abide all sorts of weather , dogs digging it up , and come back for more.
Yes, it can be invasive if you dont have it in the right place, such as around an oak, encircled by a driveway, or in a ditch along side my driveway. Out here in the country (west central Wisconsin zone 4B ) it grows freely along side the roads and in old homesteaded farms. ...

Common or not, its still beautiful

Negative

On Mar 14, 2012, chattyartist from Clayton, NJ wrote:

This is an INVASIVE species that needs to be eradicated .. It should never be planted as it's on the DO NOT PLANT LIST .. The government spends too much money trying to get rid of plants that hare invasive .. Garden Centers should never sell this plant either!

Positive

On Oct 28, 2010, CrowMeris from Greene, NY wrote:

This plant is perfect for areas that are neglected or difficult to tend. DO NOT plant in well-cultivated soil. DO NOT mix into your "regular" daylily border. I look at the Ditch Lily as a beautiful, useful weed - highly suitable for the right location, a nightmare in the wrong one - in the same class as Swamp Milkweed, New York Aster, and Sweet Joe-Pye Weed. Encourage and enjoy these plants on the wilder parts of your land, but don't invite them to put down roots in your "tame" beds.
-----------------------------
Mine grow over four feet tall - a bit more than noted in the description.

Negative

On Jul 3, 2010, cedar18 from Lula, GA (Zone 7b) wrote:

I have to chime in on the negative side because this plant does not play well with others! It will - quickly - choke out any neighboring hybrid daylilies and your mixed planting will all be orange ditch lilies. I have seen it happen multiple times.

I can see it has a place FAR away from any attempt at gardening but I would not want anyone to think they can use it as "part" of a garden. It will BE the garden, vanquishing all neighbors.

The latest 'victim' was a cousin who dug various colors (supposedly) of daylilies from my grandmother's garden, at her direction. What my grandmother did not realize is that the ditch lily had choked out those red, purple, yellow, and pink daylilies. The poor cousin (who dug these last year) had all ditch lilies to bloom!... read more

Negative

On Apr 23, 2010, Erutuon from Minneapolis, MN wrote:

Grows big, rarely flowers, and spreads into thick patches. Hard to dig out because of its big fleshy roots.

Positive

On Feb 18, 2010, mlaihome from Saratoga, CA wrote:

One of the old daylily species that are founded in China (Hunan, and North East provinces). Hardy and can grow in dry arid soil on sunny slopes. It is one of the food stables in Chinese cuisine, and can be used in fresh or in dry/debydrated form, for steaming or stir-fly with pork/chicken or fish and also for making of soup. They gather the flower buds before blooming. These buds are about 6-7 inches in length, light greenish yellow in color. It has a sweet taste after dehydrating.
Since daylily has many hybrid forms, the Chinese only consume Hemerocallis fulva Linn and Hermerocallis Citrina or use it for medicinal purposes and the rest of the species are found to be poisonous. Be careful not to eat any other daylily flower buds as it will cause diarrhea, stomache, etc food poi... read more

Negative

On Dec 2, 2009, blomma from Casper, WY (Zone 4a) wrote:

Unlike the newer hybrid Daylilies, this one is weedy. It is hard to get rid of once it has taken hold. Any root left in the soil will eventually sprout. It duplicates itself by a large root growing horizontally under ground, then poking up 4-6" from the main plant.

This is a plant to grow where you don't care if it takes over. Great for waste areas. It is easy and carefree to grow, even drought resistant. It is pretty if you like orange. However, I would not grow it in the same border with hybrid daylilies due to its aggressive growth habit.

Positive

On Jul 10, 2009, littlelamb from Virginia Beach, VA (Zone 8b) wrote:

I know this is a common daylily here, but I still love it. We moved into my house 8 years ago, and there's a 5 x 20 strip of these daylilies. They have been reliable year after year and I've never done anything to them except rake the leaves out in the late winter. They are so easy to dig up and transplant elsewhere in the yard and will still bloom the same year.

Positive

On Jun 22, 2009, shadydame from North Walpole, NH (Zone 5a) wrote:

When I moved into my house 4 years ago, there was a whole slopeful of these tiger lilies! They seem to appear in more & more places - even off-slope - every year! They are thriving in both part and full shade. Unfortunately, I seem to be having a problem with some kind of vine that appears in early summer that keeps strangling them; nevertheless, they still return in greater numbers each year! There have not been any drought, pest (the insect kind), or disease problems to date.

Positive

On Jul 14, 2008, Malus2006 from Coon Rapids, MN (Zone 4a) wrote:

One of the tougest of daylilies, it doesn't seed itself but can come up from pieces of roots (must have crown attached) and will still grows if you pull it up and throw it in a moist enough location (on bare rocks the heat and dryness will kill it). The red, variegated, yellow, double flower forms are just as aggressive as the orginal form though the variegated form tend to revert to green in tough conditions. The number one most common planted daylily species (stella d'oro and allies with grass - like foliages comes in 2nd place with all others a very very distant third place). A heirloom species that people often bring from one house to another even though they are rare in nursery nowaday because of their tendacy to thrive even when neglected - I have seen them in dry shade (never bloomi... read more

Positive

On Jun 9, 2008, donicaben from Ogdensburg, NY wrote:

So pretty that I dug it up and planted it in my front yard around my mailbox. I HOPE it becomes invasive and fights the ugly weeds to the death!

Positive

On May 31, 2008, moma4faith from Huntsville, AL wrote:

We bought a home in October, 2007, and imagine my happy surprise when these beauties started sprouting up this spring. It feels like home, as these flowers have been in my family gardens for years. Very hardy and they are ready to be divided. I've never found them to be invasive, but they are usually planted against something like a fence or garage. I also have some red mixed in with the orange and need to get out there and see what is going on.

Positive

On May 22, 2008, Devilman_1965 from Chillicothe, OH wrote:

The ultimate flower, a sure sign that it's summer! Sure, there are all the other varieties of daylily but my house wouldn't be "home" without a few clumps scattered about and a row somewhere along a fence or building ( a sloped garage or shed without gutters tends to create a perfect natural edge to keep a row contained). Availability, lack of disease/maintenance, and pretty blooms on tall scapes at the peak of the growing season make these a winner.

Long sunny days with hot, miserable nights...prime for catfishing, BBQ's, family gatherings/parties and (of course) orange ditchlilies. It just wouldn't be summer without these prolific friends on the invite list! (An old, old friend I appreciate both in the wild and my own landscape, they make me smile)

Negative

On May 2, 2008, Gabrielle from (Zone 5a) wrote:

These will take over in no time, especially if you have well amended soil. My neighbor has them along the back fence, and it is a constant battle to keep them out of my garden.

Positive

On Nov 17, 2007, standinntherain from Liberty, WV (Zone 6b) wrote:

You'll find this beauty growing in ditches all along the roads in many parts of West Virginia. I love having them and always put up signs to make sure the state road workers don't cut them down! =) All the guys know if they cut it down on the farm they'll get in trouble!! lol The deer love eating them, but there are plenty to go around!

Neutral

On Sep 19, 2007, Mainer from Durham, ME (Zone 3a) wrote:

Single form is fulva, triple form is Kwanso.

Positive

On Jun 28, 2007, JonthanJ from Logansport, IN wrote:

Hemerocallis fulva "Europa" is a pod sterile triploid mule that almost never bears seeds. If you see it, people have spread the roots. Even inch-long pieces can develop into blooming plants busily spreading by underground shoots up to a foot long.
It does persist wonderfully. My parents inherited a bed in 1952 that is already budded for the 2007 season. Because it is pod sterile, the tall scapes are self cleaning. The scapes very rarely have even three branches, so they bud build and bloom over a relatively long season. Here the foliage fails after the last flowers in all but the wettest summers.
We have had accidential success overplanting it with the larger Snowdrops whose yearly cycle is complete by the time the Daylily's growth seriously starts up.

Positive

On Jun 18, 2007, grandma_deal from Tulsa, OK (Zone 6b) wrote:

Beautiful, dependable.

Positive

On Jul 10, 2006, liebran from Valencia, PA (Zone 5b) wrote:

We have grown these two plants who have grown into many more offspring for over 25 years. They have always been the orange color--until this morning. I found one YELLOW flower in with the rest. What a surprise--mutation or what?? I don't know. Yes, they are prolific, but easy to care for and so pretty to look at on the hill. Will try to add the picture of some with the yellow one. Karen (aka liebran)

Positive

On Jul 7, 2006, lafko06 from Brimfield, MA (Zone 5a) wrote:

I have heard this plant can be invasive, however, in my yard, I have grown it in my pathway borders for 3 years and it does beautifully without taking over in any way. The other day, I dug up some on the roadway and put them in one of the backs of a garden bed. I love the vivid color and the ease of growing this plant.

Positive

On Jun 25, 2006, Sherlock_Holmes from Millersburg, PA (Zone 6a) wrote:

Since so little has been mentioned pertaining to the food value of this plant, I thought I'd mention something. The following is from The Encyclopedia of Edible Plants of North America by Francois Couplan, PH.D.

"Numerous Hemerocallis spp. are used as food in Eastern Asia, including H. flava and fulva.

The young roots are eaten raw. Older ones must be cooked.

The young shoots are edible raw.

The flower buds are eaten raw or slightly steamed. They are also pickled. They can be made into delicious omelettes.

The expanded flowers are eaten raw, fried, or added to soups as an aromatic thickener. They are often dried or preserved in salt, and must then be soaked in water before using. Wilted flowers are added t... read more

Positive

On Jun 3, 2006, marclay from markleysburg, PA (Zone 5a) wrote:

Good filler for any hard to plant area. Have both the single and double Kwanzo which are beautiful. Dont find them invasive at all

Positive

On May 29, 2006, berrygirl from Braselton, GA (Zone 7b) wrote:

I dug up some of these a few years ago that were growing on the side of the road. Though some folks consider them common and invasive, I don't find them to be. I think they are lovely, drought and deer- proof plants that require absolutely no care whatsoever.

Positive

On May 16, 2006, jamc100 from Kalkaska, MI wrote:

My Dad did not like these flowers. They were growing in several areas around the yard. He tried to mow them down, they came right back. Yeah, they are definately hardy. They've been in my parents yard as long as I remember, never been let down by them.

Positive

On Mar 22, 2006, billyporter from Nichols, IA (Zone 5a) wrote:

I have Kwanso varigated. It comes up with cream and green stripes in the spring, and reverts to green durring the summer. It comes up with mostly green leaves in the spring, so I'm constantly digging and discarding them. Only a few come up varigated, so I can keep it under control.

Neutral

On May 3, 2005, prometheamoth from Suffolk, VA wrote:

Grows everywhere, but you knew that already.
Just wanted to mention that even though it has invasive qualities, it also is a staunch survivor in VERY urban areas.

I was an Urban Park Ranger in New York City for many years and found this lily growing in the absolute worst conditions, where native species would not thrive. Where shrubby understory was torn out of the forests of Pelham Bay Park in the Bronx during the seventies (an uneducated, reactionary tactic to prevent crime!), these lilies have taken over and provide a thick green carpet with orange blossoms all summer, a pleasant surprise in NY! If the lilies were not there, people would be stomping all over the forest, compacting the soil and affecting drainage and ability for other plants to grow in this forest... read more

Positive

On Aug 5, 2004, PurplePansies from Deal, NJ (Zone 7a) wrote:

This is a good tough plant for a hard area..... most daylilies are but these are the hardiest but also the least showy...... they are nice for naturalistic settings or as I said..... or enmass for low maintenance........ the blossoms are delicious...... the species I think are the tasttiest...... the overall effect is like zucchini...... let the plants bloom so they look pretty then at sundown go an harvest them....... clean them out to make sure there' s no bugs in them...... don't eat the stem..... fry them up like zucchini blossoms....... also you can stuff them with ricotta for a sweet treat sprinkle them with powdered sugar or honey and flavored water...... h mmmmmm ....... They can grow easily by seeds and they can spread.... they're hardly invasive though..... a nice plant to hav... read more

Positive

On Jul 14, 2004, Lmichelle from Salt Lake City, UT wrote:

I live in Utah and my Lillies are the only thing that want to grow. I love my lillies. I have also found that they enjoy grass and green fert. They say, flowers need a more phospherous fert., they like the nitro rich fert you would typically use on grass.(minus the broad leaf killer)

Positive

On Jan 26, 2004, GerryD wrote:

Grows prolific in Edmonton, AB, Canada.

Positive

On Jan 21, 2004, ariusfelis from Mobile, AL wrote:

It grows in Auburn, AL
and Mobile, AL

Neutral

On Sep 3, 2003, echoes from South of Winnipeg, MB (Zone 3a) wrote:

Hemerocallis fulva spreads underground and can cover a wide area over time. It is considered invasive by some, and will crowd out other plants close by. I would not use this daylily in a border, or as a feature plant, but the double form, 'Kwanzo' or 'Flore Pleno' (as in one of the submitted pictures)is nice in a natuaralized setting.

Positive

On Jul 7, 2003, bob47 from Stone Mountain, GA wrote:

Prolific & hardy here in Zone 7. We've had them for several years and enjoy the brilliant orange/yellow shades.

Neutral

On Aug 30, 2002, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

Where I grew up, this was called a railroad lily as it grew next to the railroad tracks that ran through our town. I dug some up this summer (in IL) and transplanted it back here in AL and it's just thriving.

Positive

On Aug 30, 2002, FL_Gator from Dunnellon, FL (Zone 8b) wrote:

I have grown this plant in Kentucky and in Zone 8b Florida (U.S.) and love it. This plant is very durable and hardy. In Florida it can rebloom under certain conditions. It goes dormant in both climates.

Neutral

On Mar 13, 2001, Terry from Murfreesboro, TN (Zone 7a) wrote:

The common orange daylily has become widely naturalized in fields, hedgerows and along pools or stream. It will tolerate dry to moist soil, full sun to shade, producing orange or tawny-colored blooms from May-July. The tubers and unopened, green flower buds are both edible.

As popular and ubiquitous as it is, it's also considered an invasive pest in some areas; gardeners should be aware of their local guidelines before planting.