|'Princess Kay' is a white, double flowered form, found wild in Itasca County, MN, by Catherine Nyland, later introduced by the Minnesota Landscape Arboretum. Produces abundant flowers on the young tree and red fruit in late summer. The black bark with prominent lenticels adds interest in the winter.
Prunus nigra is a small upright branching tree, growing to 30 feet. The leaves are alternate, simple, elliptic to obovate, dark green, glabrous.
The white flowers are over 1 inch wide, in groups of 3 to 4 emerging from the leaf axils, before the leaves appear in mid to late spring. The fruit is a yellowish-red to red drupe, borne at the summer's end. Introduced in 1773.