Fraxinus americana Autumn Purple®
Autumn Purple Ash
Native to (or naturalized in) Oregon:
- Deciduous tree, to 40 ft and 25 ft wide (12 × 7.5 m), rapid growing, dense, rounded habit. Leaves opposite, pinnately compound, leaflets somewhat smaller than the species type, dark green and glabrous above. Fall color may include mottled orange-yellow, deep purple or mahogany. Seedless, a male.
- Sun. Growth may be best in deep, moist, well-drained soil, however, fall color better in full sun.
- Hardy to USDA Zone 4 Discovered at the University of Wisconsin by Karl Junginger (1905-1991) of McKay nursery, Waterloo, Iowa, it was introduced in 1956 (Jacobson, 1996).
- Autumn Purple® is a popular seedless selection of F. americana and ‘Marshall’ is a popular seedless selection of F. pennsylvanica, compare these two popular ash selections.
- Corvallis: north side of Central Park on Monroe Ave; also on 3rd St. between Adams and Washington Aves.
- Oregon State Univ. campus: two trees at each entrance to the Washington Ave. parking lot east of 11th St.