A rare look at the earliest stage of a pin oak tree shows how an acorn develops roots and leaves. Learn how one seedling was ...

(KOIN) — Pacific poison oak is found throughout Western Oregon and Washington and can cause painful rashes and blisters. Luckily, the plant is avoidable if you know what to look for. Oregon ...

Poison oak leaves have three leaflets like poison ... poison sumac looks different because it has clusters of seven to 13 smooth leaflets arraigned in pairs. It grows as a tree, and when fully ...

Q: One of my five oak trees is having this ... and how well will it do in a Texas landscape? I thought its trunk was really pretty. A: This looks like it’s Mexican sycamore (Platanus mexicana).

Poison ivy has three leaves, and the middle leaf has a longer stem. Touching poison ivy causes an allergic reaction due to urushiol oil. Poison oak and poison sumac are related to poison ivy and ...