Cornus kousa (Japan, Korea)
Habit: Exceptional flowering shrub or small tree, 4-7 m tall and 3-4 m wide; upright when young, later broad to horizontal, but asymmetrical crown; slow to moderate growing; very individual habits: slender columns or funnel-shaped specimen occur.
Flowers: Cream-white, pointed bracts, true flowers inconspicuous, after leaves shoot, June; flowers on upright stems borne above the foliage; flowers last some four to six weeks, gradually turning pink; flowers some four weeks later than C. florida, some three weeks later than C. florida rubra.
Fruits: Pink to red, like raspberries, from September, tasteless (edible).
Leaves: Ovoid, dark green, brilliant autumn colours, scarlet or orange-crimson, very persistent, from October.
Roots: Cordate roots, not far-reaching, sensitive to soil compaction.
Demands: Sun to semi-shade, more robust than C. florida; tolerates more warmth and drought, not as sensitive to later frost; somewhat protected from wind.
Soil: Good on fresh, sandy-humic or sandy-loamy soil, acidic to neutral; good on heavy soil, but slow-growing.
Note: Small specimen not flowering in the first few years or only a little, later regularly and in profusion; larger specimens flower soon after planting.
Hardiness: Zone 6a