Discover the Tree of Heaven, Ailanthus altissima, a deciduous tree that can reach heights of 100 ft. Its bark is smooth and light grey, becoming rougher as the tree ages. In summer, enjoy its yellowish-green to reddish flowers and in autumn, watch as it produces samaras that twist and spin in the wind for dispersal. All parts of the Tree of Heaven have a strong odor often compared to rotting peanuts or cashews. While it has a rich history in China for its medicinal purposes and silk production, it has become an invasive species in many other areas. It's considered a noxious weed in Australia, the US, New Zealand, and parts of Europe. It is a fast-growing tree that produces large numbers of seeds, which are easily dispersed by wind and water. We recommend using caution if planting this seed. Keep in mind these can be bought not for growing purposes.