4160 Sophora japonica Japanese pagoda tree , Chinese scholar tree medium 45 x 45 Hardy Zone 5. Not well known in North America, but planted in oriental temple gardens for at least a thousand years. Blooms from late July through August and sometimes into September. Very well adapted to the drought and high heat of city conditions if planted in well-drained, sandy loam soils. Tends to branch too low to the ground for street tree use.
Several cultivars are available.
Highly recommended for hot, dry sites.