Aegopodium Species, Bishop's Weed, Goutweed, Ground Elder, Snow-in-the-Mountain, Wild Masterwort

On Aug 5, 2014, cazort from Jenkintown, PA wrote:

This is probably on my top 10 list of most hated plants. It is extremely aggressive, spreading by underground roots. Thankfully, it does not seem to spread well by seeds. But it spreads quickly and shuts out other plants. It seems to grow equally well in sun and shade, and it is most aggressive in rich soils.

As an alternative or replacement, I recommend honewort, Cryptotaenia canadensis. This plant is superior in many ways--it is native, edible (Goutweed has some medicinal uses but is probably not as good as a food), and does not spread horizontally as aggressively.

On Feb 15, 2014, Rickwebb from Downingtown, PA wrote:

One of the worst weeds of all time! Invades all around it, getting into everything. Difficult to dig out because of so many thin white horizontal roots all through the ground. This green mother form often appears in the white variegated goutweed 'Snow-on-the-Mountain' and out competes its cultivar. Must constantly attack it all season to kill it off. Round-Up on new young foliage may work; otherwise, not.

On May 15, 2012, bombtheyard from Fairmount, NY wrote:

Highly invasive and highly annoying! Spreads everywhere - across walkways, driveways, even the road - and is impossible to eradicate. I've done everything mentioned here to get rid of it, and it still comes back, and trying to get rid of it just seems to make it spread more. I could never figure out if the flowers just happened to smell like cat pee or if they just attracted every cat in the neighborhood, but finally just reached the point where I cut everything down before it has a chance to flower. I am at my wit's end with it. FYI, if you think you can "contain" it with borders or edging, plan on digging deep. I've already tried going a foot deep with no luck.

On Jul 14, 2010, BendOregon from Bend, OR wrote:

Here in Bend, Oregon - this plant/ground cover is delightful! It is deer resistant, shade & partial shade loving - hard to find for this area as most deer resistant plants are full sun. It's variegated cream & pastel green leaves provide interest and are visually cooling, with a nice texture.

I have a large brick3-sided planter that backs up to of rear of home. Have no problem with it out growing the planter box (aprox 30 ft X 5 ft) or spreading to grass lawn below/other plant areas near by. It is also in one spot in front of the house under a large Ponderosa Pine Tree and it hasn't even grown all the way wround the tree. Both locations were planted by previous owners 8 years ago and doing well!

Something unusual is that a rhubarb looking very large ... read moreleaf plant sprung up from wild recently and I am waiting to see if it is supspected Cow's Parsnip, Devil's Club, or indeed rhubarb. I read in one location that Bishops Weed & Cow's Parsnip sometimes grow in the same location. The soil where Bishops weed is growing is well drained and amended but often dry. We area at 4,000 ft elevation in the Cascade Mtns. I also read that caution in handling is recommended (wear gloves/protective clothing) for both Bishops Weed & Cow's Parsnip - to prevent possible allergic reaction. I see Bo9ishops Weed growing in gardens in town at 3,000 ft elevations and dong well plus seemingly well contained and . . . . . not eaten on by deer, rabbits, or chickens!

On Apr 29, 2009, giftgas from Everson, WA (Zone 7b) wrote:

Growing the "green" version of "Snow-On-The-Mountain" makes a bold statement about your personality - it's like shaving with a straight razor, when there are easier alternatives available.

One of only a handful of true "set it and forget it" plants out there.

Sadly, you'll have a hard time finding it, unless you are part of the small yet elite society of invasive plant lovers, known only as the "I.P.L."

On Apr 23, 2006, jesup from Malvern, PA (Zone 7a) wrote:

Could be Neutral only because it can look nice in some situations. Pretty flowers, solid groundcover (crowds other things out). Even total drought (ground cracked, virtually no rain for almost 2 months) can't kill it (it may die back and then leaf out again once it rains).

Incredibly invasive. You can weed it out of areas by repeated pulling, especially if you do it when the ground is soft. I have around 1/2-3/4 acre of it under trees; luckily in a woodland garden it kinda works, so long as you don't want anything else (shorter) there.

Positive: covers the ground. Reasonably attractive. Pretty flowers (helps to cut them after flowering). Unkillable.

Negative: spreads like crazy in loose/sandy soil. Smothers other plants up to ~12" tall. Root... read mores break off (especially in hard/firm/packed soil) and sprout, even a year or more later. Unkillable.

I went around hitting some coming up in my mulch paths with roundup, along with some poison ivy. The ivy is dead. The Goutweed lost a leaf or two.

In loose soil, you can pull/sift it out of soil by hand, with work, and with lots of coming back to catch parts you missed.

Possible biological control: groundhogs. They love it. They have downsides, though. :-/

On Jun 17, 2005, pizzieisbest from Buffalo, NY wrote:

35 years ago, my Grandmother brought home one of these things and it took over the whole garden! My mother and I have battled this problem since 1983. I've tried round up, weed-be-gone, vinegar, gasoline, torch, torch+gasoline, and anything else you can imagine.

My aunt took something from our garden and got some bishops weed with it and now all of her neighbors have it,too!

Grandma's house and garden became a parking lot last fall, I'll check that lot later in the summer and let you know if ashphalt works against this evil creature!

On May 4, 2005, pirl from (Arlene) Southold, NY (Zone 7a) wrote:

Both Goutweed and Houttneyea are terribly invasive. They go beyond "vigorus spreader" by far. I've turned over two entire garden plots and used a sifter to get the tiniest pieces of them out to no avail. I'm sure a torch would work, as suggested, but I just read that this morning. Goutweed pops up through my daylilies, Asiatic lilies, creeping phlox, sedums, etc. I can deal with lamium and some others but these two are a scourge and should only be planted in a cement lined pot within a garden surrounded by 3' deep cement.

On Oct 2, 2004, CatskillKarma from West Kill, NY wrote:

My house came with this plant overwhelming all the garden beds. I religiously comb the soil every spring and fall, trying to remove it, and never make any headway. In fact, I think weeding only makes it more vigorous! I did eliminate it from one bed by spraying with Round-up three times in succession, mulching heavily, and continuing to weed new sprouts. That was two years ago, and new sprouts still emerge weekly.
The Bishop's weed remains green after all other plants have died back for the winter--usually until covered by snow. The blossoms are pretty and make great cut flowers, but it is by far the most invasive plant I have ever dealt with. In beds that I haven't been willing to completely kill with Round-up, I try to remove all blooms from the Bishop's Weed so that it is limite... read mored to spreading by runners, not seed as well. In my experience, this plant loves disturbed ground and will not grow in undisturbed areas--which means it is largely confine to my garden beds. grrrrrrrrr.

On Apr 21, 2003, Baa wrote:

A rhizomatous perennial from mainland Europe, Asia and parts of Russia, widely naturalised.

Has toothed, bright to deep green, divided leaves. Bears flat heads (umbels) of tiny white flowers.

Flowers May to August.

Loves a moist soil in light shade but will tolerate drier soils.

This plant is extremely invasive and persistent, many gardeners spend years battling against its encroachment. The rhizomes are brittle and break very easily, each bit of rhizome can effectively make a new plant in a short time.

Quite apart from its invasiveness the young leaves were once cooked and eaten and was also thought to cure gout. Not recommended, as always if you're going to try these things, ensure you have the right plant, some o... read moref its relatives are incredibly poisonous.