Also known as Fellenburg Plum, this small tree with an upright, spreading habit that it yet compact and ornamental, is typically grown for its edible qualities. It displays showy, fragrant white flowers in spring, and later develops large, freestone, purple-blue prune-plums in late summer. The fruit has blue overtones on the outside and yellow, sweet, juicy flesh on the inside, and it's typically ready for picking in late summer to early fall. The fruit is most commonly used for cooking, baking, drying, canning, and freezing. Plant in well-drained, amended soil. Water well after planting; maintain 1" of water once a week the first year. Prune in late winter to control size and form or after flowering. Remove dead or damaged stems at any time. Feed at least twice during the growing season with a slow release fertilizer in early spring and again mid-summer. Follow label instructions. Mulch 2" to suppress weeds, retain moisture and protect against extremes of soil temperature.