Emily Wood is a horticulturist. She says, "Poison oak and poison ivy look fairly similar, but poison sumac has much more leaflets, more leaves on the leaflet."
Poisonous plants can get out of hand, so you may need help getting rid of them if you're in your own yard. Angie's List researchers found many lawn care companies won't go near them, but there are some that do specialize in removal. Angie Hicks says, "During the hiring process be sure to cover how the company is going to tackle the problem. Are they going to use chemicals to remove the plants? Are they going to dig the plants up? How long do they guarantee their work? Will they come back if the plant reappears? Also, don't forget these plants like to spread so if the plant is in your neighbor's yard you want to understand that problem as well."
Experts say don't ever burn plants or use weed eater or a lawn mower to get rid of poisonous plants. That will just spread the oil.