Beach Plum Tree Seeds

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About & Species

Beach Plum
(Prunus Maritima)

The Beach Plum is a species of plum native to the Atlantic coast of North America. It is extremely popular in Cape Cod and other beach areas. The Beach Plum thrives in sand dunes and coastal environments. It is a deciduous shrub that can reach heights of 3 to 12 feet tall. The Beach Plum is an edible plum popular in jellies and jams.  

Soil Type: Salt tolerant and cold hardy. Prefers full sun and well-drained soils.

Zones: 3 to 6

Germination Range: 70-90%

Stratification Requirement: 30-60 days warm stratification followed by 90-120 days cold moist stratification. Soak seeds in room temperature water for 48 hours before the warm stratification. Change the water after 24 hours.

Indoor Planting: If your seeds require stratification or scarification – do the recommended pretreatment before planting indoors. Planting Instructions: Fill a container with seed starting mix to about ½ inch from the top. Place your seeds 1 inch to 1 ½ inches below the soil surface. Gently water your seeds to keep moist, not soaking wet. Heat & humidity is critical for germination. Germination may occur in 1 week or as long as 3 months (depending on the species). Place the seed container on a heat mat under growing light(s). Keep your growing lights on 14 hours per day. Keep your heat mat on 24 hours per day. Once your seeds germinate, move each seed into its own container under the growing lights and on the heat mat. Keep your seedlings indoors for 2-3 months before transplanting outdoors in the spring (May to June).

Outdoor Planting: If your seeds do not require stratification: the best time to plant tree and shrub seeds outdoors is after the last frost in your area (spring). In the Northern states – the best time to plant seeds outdoors is from May to June. If your seeds require pretreatment: you should plant your seeds outdoors before the ground freezes in your area (late September to early November). Your seeds will naturally stratify during the cold winter. Germination usually occurs in May or during the spring season.