I got a brother in law that got a poison ivy. He was very allergic and according to my sister he is itching so bad that he can't bear. He went to the doctor because his skin swelled. I didn't know about poison ivy that it makes a person get irritable. I am glad there is no poison ivy in our place. I am glad that after my brother went to the doctor he got well. Praise God for that, I hope he never get poison ivy again either my sister too. They live at the farm and poison ivy growing around their property. Poison ivy is a plant in the family Anacardiaceae. It is a woody vine that is known for its ability to produce urushiol, a skin irritant that causes an itching rash for most people. Poison ivy grows throughout much of North America, including the Canadian Maritime provinces, Quebec and Ontario, and all U.S state east of the Rockies except North Dakota. Poison ivy grow as on shrub up to about 1.2 metres that would be 3.9 feet tall, as a groundcover 10-25 cm and that would be 3.9 to 9.8 inches high or as a climbing vine on various supports. The of poison ivy are trifoliate with three almond shaped leaflets. The vines develop adventitious roots, or the plant can spread from rhizomes or roots crowns. Poison ivy spread both vegetation and sexually. How can you identify poison ivy? There are three ways to indentify them. The first is the cluster of three leaflets, the second is alternative leaf arrangement and the last one is lack of thorn. So be careful about plants. Remember not all the plants in this earth are herb. Some of them are good for poison. If you go to the woods hunting be sure to to wear a jacket so ever you touches something you don't know you won't get sick. Like my brother in law he never know about the vine he touches and when he get back home he started itching and that was poison ivy he got.