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Help, Is this poison ivy, sumac, or oak?

Posted by hkrn44 none (My Page) on
Fri, Jun 13, 14 at 18:41

Hello,
I am moving into this house on Monday. I noticed in the backyard there are several bushes that look like poinson ivy. I don't even know if they could be considered bushes, they are more like weeds. they also have thorns on them in some place. There are some with 3 leaves and some with 5 leaves. I am very allergic to poison ivy, possibly the others too, and would need something done fast if it one of the poison oak,sumac, or ivy.


Follow-Up Postings:

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RE: Help, Is this poison ivy, sumac, or oak?

The one on the left appears to be a blackberry. Weedy kinds are abundant in my region; where do you live?

Can't see detail of plant on right side to know.


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RE: Help, Is this poison ivy, sumac, or oak?

The urushiol that causes the rash is present in all three of those plants, so anyone that reacts to one will react to all three. Poison Sumac has a very limited growth area, generally very wet places, so it is unlikely to be found where it is high and dry. But the other two do grow almost everywhere, although I have not seen any in years.
Poison Ivy is a vine. Poison Oak tends to be more of a shrub and the leaves closely resemble those of Oaks, Poison Sumac is a shrub and looks similar to most of the other Sumacs.


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RE: Help, Is this poison ivy, sumac, or oak?

The video linked below should help you rule out PI this time and be better able to id it next time. Note that PI never has thorns.

Sorry about the ad, but the featured video is great for your purpose. :)

Here is a link that might be useful: poison ivy id video


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RE: Help, Is this poison ivy, sumac, or oak?

Need images of a branch/stem of each plant isolated against a plain background.


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RE: Help, Is this poison ivy, sumac, or oak?

The plants to left and right are Rubus species, blackberries, as stated above.


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RE: Help, Is this poison ivy, sumac, or oak?

Looks like Parthenocissus on the right, Virginia creeper. You can see leaves of 5 leaflets. Agreed, berry vine on the left.

In the corner, could be a maple tree. Doesn't look like there's room for a tree there. Not sure what the other tall thing is.


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RE: Help, Is this poison ivy, sumac, or oak?

I'm pretty certain the one on the right is a Rubus, not Parthenocissus. The stiff stems, the way the tip grows upwards, what look like thorns and the leaf shape all point to Rubus imo. Perhaps the OP could tell us if it has prickles.


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RE: Help, Is this poison ivy, sumac, or oak?

Excellent, I may have been going too fast, while hungry...


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