The Poison Ivy - Poison Oak Blog

Poison ivy is one of the most enthusiastic participants in the fall foliage extravaganza.

Poison ivy often starts turning early, and can have truly lovely fall color, featuring red, orange, and yellow, sometimes mingling on a single leaf.

TAGS: fall, autumn
September 12, 2019 - 10:15am
Monster Poison Ivy Leaves

There are a few things to learn from this photo of your poison-ivy-nerd webmaster pointing at a poison ivy leaf as big as his head:

The leaves can get very big, typically in darker areas where they need to gather more light.

TAGS: CO2, large
August 23, 2019 - 3:20pm
Three Poison Ivy Covered Trees

Here are three trees between a road and field. All three are covered with vigorous growths of poison ivy.

In fact, each of these could likely be stripped just by cutting the vines near the ground and just yanking the vines off the trees.

TAGS: trees
August 19, 2019 - 2:06pm
Suburban Condo Poison Ivy

This image illustrates two points:

1. It is very common to find poison ivy growing in well-tended suburban condominium developments.

2. The plant will climb when it can, but also grows as a ground cover. (Also as a shrub, at times.) 

TAGS: suburban, condo
August 12, 2019 - 11:37am
Poison Ivy Fence Monster

Driving along a suburban road here in Massachusetts, I noticed this nasty poison ivy infestation on a wooden fence.

TAGS: fence, climbing
August 4, 2019 - 12:06pm

Hog peanut is a vine that can be very difficult to tell apart from poison ivy, and they sometimes grow on the ground together. 

Hog peanut does not climb as poison ivy does, so if you find a vine on a tree or house it can't be hog peanut (though it could be Virginia creeper).

TAGS: hog peanut
July 27, 2019 - 2:08pm
small town poison ivy

Here is a photo from a lovely small town in Pennsylvania. 

Like many small towns it has quite a few attractive, solid, brick buildings from the early part of the 1900s.

TAGS: small town
July 19, 2019 - 1:10pm
poison ivy erupts from a shrub

We saw this nice little shrub between a parking lot and the road. It is some sort of blue-green evergreen shrub, but with a big mess of poison ivy erupting out of the top.

TAGS: shrub
July 15, 2019 - 8:24pm
poison ivy on utility pole

Sometimes it seems like poison ivy has a special love for utiliity poles, but in fact it will climb on anything that stands still.

July 8, 2019 - 10:50am
poison ivy trespass sign

Here is a curious one.

Did the person put the trespass notice OVER the poison ivy vines, or did the vines creep under the notice?

Our guess is that the sign was applied right over the vines, which means the sign-putter-upper probably had no idea what the vine was.

July 3, 2019 - 11:16am