Allergies to Poison Ivy, Oak, and Sumac Poison ivy, poison oak, and poison sumac are plants that contain an irritating, oily sap called urushiol. Urushiol triggers an allergic reaction when it comes into contact with skin, resulting in an itchy rash, which can appear within hours of exposure or up to several days later
Allergy-Free-Gardening I quickly discovered that certain flowers never made anyone sneeze, that some flowers made a few folks sneeze, and that there were others that just literally trashed people. By this time though I was hooked on the idea that the right garden wouldn’t trigger any allergies.
Tree and Plant Allergy Info for Research Airborne allergies affect millions of Americans. It's a fact. And the cause of all this suffering can be linked to the plants and trees around us. PLUS - Research Botany/Allergy By Location!
What You Should Know About Poisonous Plant Allergies - Kids Plant allergies are fairly common with the most frequently seen allergy resulting from exposure to high pollen levels. There are however some very serious plant and foods allergies such as that of the peanut which can become potentially fatal very quickly if appropriate treatment is not given.