Prunus maritima
Beach Plum
General
A dense shrub that grows mainly in sandy soils near the coast. The fruits are about the size of a quarter and an attractive deep purple; they can be eaten by humans and are a bit sour but enjoyable straight off the plant. Care should be taken to not consume the seeds or foliage, as they are toxic to humans and other mammals.
Plant Description
Beach plum grows 10 to 12’ in height. In spring, large clusters of small white flowers cover the plant. Large, brilliant dark purple drupes. Entire, green shiny ovate leaves. Dark brown, almost purple bark. In fall, leaves turn red, orange, or brown.
Height (ft)
10-12
Soil moisture
Medium
Soil types
Sandy or Gravelly
Wetland indicator
UPL
Shade tolerance
Intolerant
Bloom color
White
Bloom period
Spring
Fall conspicuous
Yes
Anaerobic tolerance
Medium
Drought tolerance
High
Salinity tolerance
Low
Self-Pollinating?
Yes
Range
Coast in the Northeastern United States, from southern Maine down to Delaware.
Kartesz, J.T. 2024. Floristic Synthesis of North America, Version 1.0. Biota of North America Program (BONAP) [website http://bonap.org/]
Additional Information
According to USDA NRCS, Native Americans and early settlers would eat the plums in late summer. The pit however is extremely poisonous as it contains hydrocyanic acid (cyanide). It was used and still to this day is used to make preserves and "syllabub" which is a foamy alcoholic drink.