Seaside Alder (Maritima)

The Seaside Alder (Maritima) is generally described as a perennial tree or shrub. This is native to the U.S. (United States) has its most active growth period in the spring and summer . The greatest bloom is usually observed in the late summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Seaside Alder (Maritima) has a moderate life span relative to most other plant species and a moderate growth rate. At maturity, the typical Seaside Alder (Maritima) will reach up to 30 feet high, with a maximum height at 20 years of 20 feet.

The Seaside Alder (Maritima) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, seed. It has a slow ability to spread through seed production and the seedlings have low vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below 2°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Tree, Shrub
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Moderate
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Late Summer
Displays Fall Colors Yes
Shape/Growth Form Single Stem
Drought Tolerance Low
Shade Tolerance Intermediate
Height When Mature 30
Vegetative Spread Slow
Flower Conspicuousness No
Fruit/Seed Abundance Low
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Seed
Moisture Requirements High
Cold Stratification Required Yes
Minimum Temperature 2
Soil Depth for Roots 20
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing No
Growth Requirements
pH Range 5–7 pH
Precipitation Range 36–36 inches/yr
Planting Density 300–1200 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 20
Minimum Frost-Free Days 185 day(s)
Salinity Tolerance None
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database,
National Plant Data Center, Baton Rouge, LA 70874-4490 USA