Plant ID forum: Poison Ivy ???

Views: 344, Replies: 8 » Jump to the end
Eastern Massachusetts (Zone 5b)
jsf67
May 30, 2017 12:09 PM CST
I have poor eyesight combined with no visual memory, and the appearance of poison ivy varies pretty widely. So a few times (including two years ago) I sprayed weed killer on anything that looks even a little like poison ivy. A year ago I found nothing that looks like it. But poison ivy and its look alikes are common in the neighborhood, so now the boundary between my property and the next lot over is thick with various plants within the general range of poison ivy appearance. I did a first round of indiscriminate spraying anyway (if I wasn't sure it wasn't poison ivy, I sprayed weed killer). But I'd like some better hints of what to look for when I review results:

In this one, I think the plant with the sets of 3 large green notched leaves is the same plant as the one with sets of 3 smaller reddish non-notched leaves and the combination is especially indicative of poison ivy. But I didn't push any of it around to even see for sure whether it is the same plant.
Thumb of 2017-05-30/jsf67/067517

This one has a very different (to me at least) combination of 3 leaves and reddish:

Thumb of 2017-05-30/jsf67/2a4402

This next one has a lot in common with the one above. I think it must be the same kind of plant even though to be the leaf shape looks different:


Thumb of 2017-05-30/jsf67/262e6f

Next: groups of 3 leaves, but I'm pretty sure not poison ivy. Two different plants common here look to me exactly like this. One grows into a giant shrub with sharp thorns. The other spreads staying low with tiny thorns. Please confirm it isn't poison ivy. But also what is it?


Thumb of 2017-05-30/jsf67/f668a1

Next: The leaf shape on these two is so different from each other, it is hard to imagine they are the same kind of plant. But I suspect they are both poison ivy.

Thumb of 2017-05-30/jsf67/77ef58

[Last edited by jsf67 - May 30, 2017 12:10 PM (+)]
Give a thumbs up | Quote | Post #1459234 (1)
Name: Lin
Florida (Zone 9b)

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
Image
plantladylin
May 30, 2017 12:17 PM CST
It sure looks like it could be Poison Ivy (Toxicodendron radicans) to me. Hopefully others will be along with suggestions soon. For comparison, two photos from our database:

~ Playing in the dirt is my therapy ... and I'm in therapy a lot! ~


Eastern Massachusetts (Zone 5b)
jsf67
May 30, 2017 12:29 PM CST
Thanks. You selected (I assume intentionally) two photos that are a remarkably good match for the asymmetrically notched large green leaves in my first photo. I hadn't been that skilled at looking at online collections of the various appearances of poison ivy to find the ones that convincingly match. But I can see it once you did. So that one of the images I posted, I will conclude is poison ivy. What about the others?

I would like to know how many of the several different looking things with apparent groups of 3 leaves are poison ivy. Is it all but the one that looks like it is starting to develop thorns? Or are there more plant types shown?

Assuming that other one is a plant that develops thorns, I was hoping for that ID as well. I'll start another thread is necessary and if I'm sure it isn't poison ivy.
[Last edited by jsf67 - May 30, 2017 12:31 PM (+)]
Give a thumbs up | Quote | Post #1459249 (3)
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
May 30, 2017 1:14 PM CST
The fourth photo is a berry.
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

Webmaster: osnnv.org
Name: Lin
Florida (Zone 9b)

Region: United States of America Deer Region: Florida Charter ATP Member Million Pollinator Garden Challenge I was one of the first 300 contributors to the plant database!
Garden Procrastinator Birds Butterflies Bee Lover Hummingbirder Container Gardener
Image
plantladylin
May 30, 2017 5:32 PM CST
# 1 through 3 look like Poison Ivy to me; leaves can be variable.

#4 and #5 remind me also of berry; possibly Blackberry or Dewberry (Rubus sp.): I found this page of Eastern Mas vascular plants with images for comparison: http://www.salicicola.com/phot...
~ Playing in the dirt is my therapy ... and I'm in therapy a lot! ~


Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
May 30, 2017 7:06 PM CST
I think they're all poison ivy except probably the fourth one although apparently rarely poison ivy can also have more or less toothed leaves. The mis-shapen leaflets in the one leaf of picture five can happen with poison ivy, the other leaf does look like poison ivy.
Name: Daisy I
Reno, Nv (Zone 6b)
Not all who wander are lost
Garden Sages Plant Identifier
Image
DaisyI
May 30, 2017 8:07 PM CST
I said the fourth is a berry as I can see what appears to be thorns on the stems.
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

Webmaster: osnnv.org
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
Image
sooby
May 31, 2017 4:23 AM CST
DaisyI said:I said the fourth is a berry as I can see what appears to be thorns on the stems.


Good point, Daisy, I couldn't see those on my screen so I focused on the teeth. I remembered from the poison ivy website that very rarely poison ivy can have teeth so didn't want to rule it out on that basis even though it doesn't look like poison ivy. This is the page that shows the variations it can have:

http://www.poison-ivy.org/unus...


Eastern Massachusetts (Zone 5b)
jsf67
May 31, 2017 4:53 AM CST
sooby said:The mis-shapen leaflets in the one leaf of picture five can happen with poison ivy, the other leaf does look like poison ivy.


The round leaves "with a dent where the point would normally go" are a good match to the 2'nd photo in the link you gave:

So I see consensus here that my 4'th photo is a berry and everything in the other 4 photos that has sets of 3 leaflets is poison ivy.

I guess I need to check again in a week and see what I missed with the weed killer. I probably also need to use gloves and care to rip out a large amount of virginia creeper from the same area. In past years, the vines growing up every tree in that area were poison ivy. This year those are all virginia creeper, but I still don't want them. The two are so intermixed than any virginia creeper I pull will brush against poison ivy as it comes out and any I don't pull is likely hiding smaller poison ivy plants under it.


« Garden.org Homepage
« Back to the top
« Forums List
« Plant ID forum
Only the members of the Members group may reply to this thread.

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by TBGDN and is called "Glory of the Snow"