Fraxinus, ash, is a genus of flowering plants in the olive and lilac family, Oleaceae. It contains 45–65 species of usually medium to large trees, mostly deciduous, though a number of subtropical species are evergreen. The genus is widespread across much of Europe, Asia, North America. Name: Green Ash Tree seeds Scientific Name: Fraxinus Pennsylvanica leaf color: Green and Yellow Hardiness zone: 2 through 9 plant height: 50-60 feet light requirements: ideal condition for tree is full sunlight soil & water preferences: grows well in both acidic & alkaline environment. grows well in loamy, well-drained or wet soils. Green ash tree seeds are winged seeds called samaras that grow in clusters on the stems . They are paddle-shaped and have papery casings. They are light green or brown in color. Mountain Ash Tree Seeds (Fraxinus Pennsylvanica), SEMILLAS DE ARBOL DE Fresno para They ripen in the fall and may persist on the tree through winter. They are also known as "keys" or helicopter seeds