1. Bullet Poison ivy does not cause an allergic reaction in animals besides humans.

  2. BulletPoison ivy is perennial, the plant flowers in April through June, when the leaves are about half open.  The fruits culminate in the fall and the leaves drop once the temperature descend below freezing.

  3. BulletPoison ivy in North America dates back to the 1600s

  4. BulletUrushiol can stay potent for up to 5 years.

  5. BulletPoison ivy rashes are not contagious

  6. BulletPoison ivy is closely related to mangos.  Mango peel can hold urushiol and can give people an allergic reaction.

  7. BulletThe robust roots in poison ivy helps prevent erosion

  8. BulletPoison ivy size and urushiol volume and CO2 in the air have a direct correlation.  Watch a video on this correlation here.

  9. BulletPoison ivy pollen is a main  of honey in the midwestern and southern states of the U.S.

  10. BulletUrushiol was used as a dye by the Native Americans

  11. BulletEarly europeans intentionally planted poison ivy along embankments intending to have the roots used as support.

Spring                                           Summer

Fall                                              Winter