Poison ivy causes itchy rashes from the oil urushiol. It grows as a vine on trees and fences or as a low shrub along edges.
- Scientific name
- Toxicodendron radicans
- Type
- Perennial vine or shrub
- Most visible
- April–October
How to Identify Poison Ivy
- Leaves of three leaflets
- Middle leaflet on a longer stalk
- Hairy, rope-like vines on trees
- Turns red in fall
When It Shows Up in Oklahoma Lawns
Grows along fence lines, tree bases, and woody edges.
How to Control Poison Ivy
- Wear gloves and long sleeves
- Never burn it, since smoke carries the oil
- Treat with a labeled herbicide
- Bag and dispose of plant material