Coastal Sage Scrub Oak (Dumosa)

The Coastal Sage Scrub Oak (Dumosa) 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 . The greatest bloom is usually observed in the early spring, with fruit and seed production starting in the spring and continuing until spring. Leaves are retained year to year. The Coastal Sage Scrub Oak (Dumosa) has a long life span relative to most other plant species and a slow growth rate. At maturity, the typical Coastal Sage Scrub Oak (Dumosa) will reach up to 9 feet high, with a maximum height at 20 years of 9 feet.

The Coastal Sage Scrub Oak (Dumosa) is usually not commercially available except under contract. It can be propagated by bare root, container, seed. It has a slow ability to spread through seed production and the seedlings have medium vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below 22°F. has high tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Slow
General Type Tree, Shrub
Growth Period Spring
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability Contracting Only
Physical Characteristics
Bloom Period Early Spring
Displays Fall Colors Yes
Shape/Growth Form Multiple Stem
Drought Tolerance High
Shade Tolerance Intolerant
Height When Mature 9
Vegetative Spread None
Flower Color Yellow
Flower Conspicuousness No
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Spring Spring
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Seed
Moisture Requirements Low
Cold Stratification Required Yes
Minimum Temperature 22
Soil Depth for Roots 30
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing Yes
Growth Requirements
pH Range 6–8.5 pH
Precipitation Range 12–12 inches/yr
Planting Density 300–700 indiv./acre
Soil Textures Coarse, Medium
Soil Depth for Roots 30
Minimum Frost-Free Days 165 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention Yes
Fire Resistant No
Causes Livestock Bloating None

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