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Avatar for gardengirl46
May 22, 2018 2:10 PM CST
Pittsburgh, PA
I'm not sure whether this patch of ivy is immature Boston ivy or poison ivy. We have Boston ivy growing all over the fence right behind this patch, and I found a separate, single plant of what is definitely poison ivy in another part of the yard and it looks substantially different (smooth leaves without the "wrinkled" appearance, some young leaves coming in that are red, etc) but I don't want to play with fire if this might actually be poison ivy! Thoughts?

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May 22, 2018 3:00 PM CST
Name: Daisy I
Reno, Nv (Zone 6b)
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Welcome!

Its not Boston ivy or poison ivy. It looks more like something in the Rubus family. If you peak under the leaves, do you see little thorns?
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Avatar for gardengirl46
May 22, 2018 3:29 PM CST
Pittsburgh, PA
DaisyI said: Welcome!

Its not Boston ivy or poison ivy. It looks more like something in the Rubus family. If you peak under the leaves, do you see little thorns?


Hmm, I don't see anything that looks like thorns! I tried to take a photo of the underside but it didn't come out too well since my phone has trouble focusing that close. I also took a photo of what looks to me like the same plant in another part of the yard, growing along a vine with what I thought was Boston ivy, but maybe it isn't! My plant ID skills are a bit lacking :)

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May 22, 2018 4:03 PM CST
Name: Tiffany purpleinopp
Opp, AL 🌵🌷⚘🌹🌻 (Zone 8b)
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I don't think the first pic is the same plant as the 3rd pic. Since there are no thorns, compare the 1st plant to goutweed. Some pics here to get started, but surprisingly (since this plant invades so many gardens,) probably not enough features pictured for ID: Goutweed (Aegopodium podagraria)
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May 22, 2018 4:06 PM CST
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
That does look like Boston ivy but its not the same plant.
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming...."WOW What a Ride!!" -Mark Frost

President: Orchid Society of Northern Nevada
Webmaster: osnnv.org
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May 22, 2018 4:51 PM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
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Boston Ivy attaches to the wall differently from poison ivy. Boston Ivy has "suction cups" as in this picture:

https://www.google.ca/search?q...:

Poison Ivy holds on with clinging rootlets:
https://www.google.ca/search?q...:

I agree with everyone else that the plant in the first picture is not the same as the third. I wondered if it was a kind of Geum. The little bracts/leaflets at the node should be a clue.
Last edited by sooby May 22, 2018 4:51 PM Icon for preview
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May 22, 2018 5:10 PM CST
Name: Leslieray Hurlburt
Sacramento California (Zone 9b)
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Avatar for gardengirl46
May 22, 2018 5:27 PM CST
Pittsburgh, PA
So many options! I think it could possibly be goutweed, although a lot of the pictures had a different leaf shape than this. The leaves do look like Japanese creeper, but they don't have any of that red tinge to them. If they're definitely not poison ivy, though, I'll probably let them be! They're growing in the very back of the yard which is heavily shaded and we struggle to get anything intentional to grow there, so we'd rather have regularly-trimmed weeds against the fence than bare dirt. But of course, I didn't want to hit these with the weed whacker if they were poison ivy!
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May 22, 2018 5:39 PM CST
Name: Sue
Ontario, Canada (Zone 4b)
Annuals Native Plants and Wildflowers Keeps Horses Dog Lover Daylilies Region: Canadian
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Japanese creeper is another common name for Boston Ivy, Parthenocissus tricuspidata.

Your first plant may flower. If it's a Geum it should look something like this:





If it's goutweed the flower will be completely different:


That's if you leave it there long enough to flower Smiling
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May 22, 2018 6:16 PM CST
Name: Leslieray Hurlburt
Sacramento California (Zone 9b)
The WITWIT Badge Region: California Plant Lover: Loves 'em all! Xeriscape Native Plants and Wildflowers Salvias
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You can see seedlings of two different plants in the first photo. There are "Boston Ivy" seedlings and the other seedlings look similar to both "Goutweed" and Geum urbanum. If you could find a seedling with the seed leaf you could perhaps sort out which it is now or just wait for a flower. From what I can see I would say it's "Wood Avens" (Geum urbanum). There's "Boston Ivy" on the fence in the first photo and the third photo is also all "Boston Ivy".
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