Poison Ivy: Nature's Plant, Your Rash

[00:00:00]The problem is entirely the human response to urushiol. Poison ivy, Toxicodendron radicans, is a native plant. Just like wild raspberry and blackberry, it is indigenous to North America. It is not on any New England invasive species list. It is not prohibited. It belongs here ecologically.

[00:00:20]Poison ivy has been in North America for millions of years. It is not an introduced plant. It grows from coast to coast from southern Canada down to Mexico.

[00:00:31]Poison ivy produces urushiol, the oily compound that causes the allergic reaction most people experience as a rash. Roughly 85% of people will develop a reaction if they come in direct contact with it.

[00:00:44]The plant spreads aggressively through bird-dispersed seeds and through root runners. It can grow as ground cover, or shrub, or climb as a vine in trees and structures.

[00:00:55]It tends to establish itself in garden edges, fence lines, and disturbed soil.

[00:01:00]Exactly where you're working. From an ecological standpoint, poison ivy provides significant value. The berries are an important food source for over 60 species of birds that are not affected by urushiol.

[00:01:12]It provides ground cover that prevents erosion. Wildlife use it for cover and shelter. It is a legitimate, ecologically valuable, native plant. The problem is entirely the human response to urushiol. The plant itself is doing exactly what it evolved to do. But, the short version is protective gear is non-negotiable. Long sleeves, gloves, eye protection, and wash everything thoroughly afterwards. Small plants can be dug out of the ground at the root.

[00:01:42]Larger, established plants are a more involved removal process. And because birds keep reseeding it, management is ongoing rather than one-time.