Propagation Seed - requires 2 - 3 months cold stratification and is best sown in a cold frame as soon as it is ripe. Sow stored seed in a cold frame as early in the year as possible. Protect the seed from mice etc. The seed can be rather slow, sometimes taking 18 months to germinate. Prick out the seedlings into individual pots when they are large enough to handle. Grow them on in a greenhouse or cold frame for their first winter and plant them out in late spring or early summer of the following year. Cuttings of half-ripe wood with a heel, July/August in a frame. Softwood cuttings from strongly growing plants in spring to early summer in a frame. Layering in spring.
The wild plums of this species are gathered for making jellies and jams. The scientific name describes the flower clusters, known as umbels, that are rounded, with equal stalks like an umbrella.
A green dye can be obtained from the leaves. A dark grey to green dye can be obtained from the fruit. Wood - heavy, hard, close grained. Cultivation details Thrives in a well-drained moisture-retentive loamy soil. Prefers some lime in the soil but is likely to become chlorotic if too much lime is present. Succeeds in sun or partial shade though it fruits better when growing in a sunny position.
Prunus umbellata, called flatwoods plum, hog plum. and sloe plum, is a plum species native to the United States from Virginia, south to Florida, and west to Texas.