From Virginia to Nova Scotia, the beach plum is a wild, natural plum that grows in profusion along the beaches. The fruit may be eaten raw, although it's most often used to make jam and jelly. Prunus maritima is a deciduous shrub that grows tall in its native sand dune environment. The leaves are alternating, elliptic, long, 2–4 cm (0.8–1.6 inches) wide, and have a strongly serrated edge. They are green on top and pale underneath, becoming a brilliant crimson or orange in the fall. The blooms have five white petals and big yellow anthers and are 1–1.5 cm in diameter. In the wild, the fruit is a 1.5–2 cm diameter edible drupe that can be red, yellow, blue, or practically black.
Botanical Name : Prunus maritima
Common Name : Beach Plum
Height : 13 ft
Spread : 5 ft
Germination Info : Seed requires 30 days warm stratification followed by 60 days cold.
Hardiness zone : 4-7
Average seed per ounce : Approx. 100