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.
‘Halka’ –
is fast growing, thornless with high, rather narrow crown turning yellow in
autumn
Grow in any fertile, well drained
soil in full sun and will tolerate poor drainage and pollution.
zones 3-7
