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Invasive Odorous Weed/Tree?

Discussion in 'Pesticide & Herbicide Application' started by amicold, Aug 5, 2012.

  1. amicold

    amicold LawnSite Member
    Messages: 3

    I know this is the pesticide forum but I figured I would post here being that I am an applicator and looking for a way to control these. These appear to be some kind of fern, but they propagate amazingly quick, they also stink. The vegetation gives off a pungent odor, very disagreeable, kind of rotting/fecal like. Especially when the vegetation is cut when trimming/removing. I am assuming they are an invasive/weed species because of their speed of propagation and growing environments (foundation cracks, crevices, etc) Immature plants have green stems/stalks and they eventually grow woody. The images show young (5ft) plants and a fully mature "tree". I am located in WNY if it helps.

  2. redsox

    redsox LawnSite Member
    Messages: 21

    looks like a Walnut tree. I know mice and squirrels will move the nuts to cracks. Not sure though. What ever it is try cutting them and using some toradon RTU with sponge applicator on the fresh cut and that will work. Haven't found any tree toradon won't kill.
  3. amicold

    amicold LawnSite Member
    Messages: 3

    Really? I didn't think it would be something that common and I suppose if they are I feel stupid. The "mature" plant in the picture doesn't have fruit of any sort on it. These are all over a couple of crap properties I cut in a low income part of Buffalo. I don't see these where I live in the burbs. They seem to have an affinity for buildings. I'll see if I can get some different pictures of the full grown trees. There are some that are forty feet tall or so alongside some abandoned buildings but they don't have the density and fullness that a mature walnut would have.

    Edit: For reference, the smaller ones in the photo weren't present in the beginning of the season, They are maybe ten weeks old.
    Last edited: Aug 5, 2012
  4. White Gardens

    White Gardens LawnSite Fanatic
    Messages: 6,776

  5. White Gardens

    White Gardens LawnSite Fanatic
    Messages: 6,776

    Best way to get rid of them is to cut them off close to the ground and apply stump killer.

    Then make sure that you use Round-Up or any other weed killer to get any new sprouts every year. Generally though, I've found if you can eliminate them and ones in the surrounding area, they won't come back and seeds seem to not stay viable in the soil for too many seasons.

  6. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

    Looks like sumac to me...
    Posted via Mobile Device
  7. cgaengineer

    cgaengineer LawnSite Fanatic
    Messages: 15,778

  8. agrostis

    agrostis LawnSite Silver Member
    Messages: 2,539

    That's either a poison sumac or ailanthus, they are hard to tell apart when young,(at least for me). The seedhead when mature is a good way to tell them apart. The description's i have read say ailathus has a strong burnt peanut butter smell from minimum contact and the mature wood has a brownish core. Poison sumac has the same active chemical (urishiol) as poison ivy on it's leave's. You decide what it is. A stump treatment of round up concentrate will kill either one.


  9. White Gardens

    White Gardens LawnSite Fanatic
    Messages: 6,776

    Agreed, Possibly a Sumac Too.

  10. 93Chevy

    93Chevy LawnSite Fanatic
    Messages: 40,280

    I was always under the impression that it was Sumac...easy to tell by the smell. I'd be interested to see if I was under the right impression or if I was misled.

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