"If you are planting the seed or pit of the beach plum it may be more like three to five years before it produces fruit.

A. Beach plum (Prunus maritima) does not come in male and female, but the plants cannot fertilize themselves, so you still need two for cross-pollination. ... Beach plums are still fundamentally wild, and the plums they produce differ greatly in quantity, size, color and sweetness.

The fruit is an edible drupe 1.5–2 cm (0.6–0.8 inches) in diameter in the wild plant, red, yellow, blue, or nearly black. A plant with rounded leaves, of which only a single specimen has ever been found in the wild, has been described as Prunus maritima var. ... The fruit ripens in August and early September.

Plums from trees growing on sand dunes are edible but are mostly pit, which is covered by a stingy layer of sweet flesh wrapped in a bitter skin; the poignant taste of summer's end. cordials and wine.. . . . .364011236640!]0000000000000009783314145502!]