
Winter Poison Ivy Vine Tangle
Here is a common sight in poison ivy country, which is much of the United States, east of the Rocky Mountains. Poison ivy loves to

Poison Ivy by Cynthia Riggs
While searching for poison ivy books at Alibris, my favorite online bookshop, I came across this terrific book by Cynthia Riggs, who has written a

Poison Sumac in Winter
I was able to find poison sumac (on Martha’s Vineyard) in the winter, but only because I used the iNaturalist app to see if it
Are Poison Ivy Leaves Shiny?
Poison ivy leaves are known for being shiny. So which leaves here are poison ivy? Touch the photo for the answer. (Touch here to turn
PI-QUIZ #4
Poison ivy is known for its red leaves. Here we see both red and green leaves. Which is poison ivy? Touch the photo for the
PI-QUIZ #3
Here are two “leaves of three”. One is poison ivy, one is not. Touch the photo for the answer. (Touch here to turn off the