Description
G. triancanthos – This is the most commonly grown species,.It is a spreading, deciduous tree from Central and Eastern North America and in the wild it can reach 100-150′ feet tall and 70′ feet wide, but usually less in gardens.It has a thorny trunk (sometimes dangerously so) and shoots, the thorns branched and 3-12″ long.It produces glossy, dark green leaves, to 10″ long, turn yellow in autumn, and are pinnate, with 14-24 leaflets or bi-pinnate, with 4-16 pairs of oblong-lance shaped leaflets.In autumn it bears pendent, sickle shaped, twisted black seed pods, to 18″ long and 1 ½” wide.
‘Skyline’
– grows 50′ feet tall and is compact and broadly conical, with ascending upper
branches, and dark green leaves turning, golden yellow in autumn
Grow in any fertile, well drained
soil in full sun and will tolerate poor drainage and pollution.
zones 3-7
