Autumn Olive (Umbellata)

The Autumn Olive (Umbellata) is generally described as a perennial shrub. This is not native to the U.S. (United States) and has its most active growth period in the spring and summer . The Autumn Olive (Umbellata) has white-gray foliage and inconspicuous yellow flowers, with an abuncance of conspicuous red fruits or seeds. The greatest bloom is usually observed in the early spring, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Autumn Olive (Umbellata) has a short life span relative to most other plant species and a rapid growth rate. At maturity, the typical Autumn Olive (Umbellata) will reach up to 15 feet high, with a maximum height at 20 years of 15 feet.

The Autumn Olive (Umbellata) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, seed. It has a rapid ability to spread through seed production and the seedlings have high vigor. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -23°F. has high tolerance to drought and restricted water conditions.

Plant Basics
Category
Growth Rate Rapid
General Type Shrub
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Short
Plant Nativity Introduced to U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Early Spring
Displays Fall Colors Yes
Shape/Growth Form Multiple Stem
Drought Tolerance High
Shade Tolerance Intolerant
Height When Mature 15
Vegetative Spread None
Flower Color Yellow
Flower Conspicuousness Yes
Fruit/Seed Abundance High
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Rapid
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Container, Seed
Moisture Requirements Medium
Cold Stratification Required Yes
Minimum Temperature -23
Soil Depth for Roots 18
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Resprout Ability Yes
Responds to Coppicing No
Growth Requirements
pH Range 5–7.5 pH
Precipitation Range 28–28 inches/yr
Planting Density 700–2700 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 18
Minimum Frost-Free Days 150 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant No
Causes Livestock Bloating None

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