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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.
| 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 |
| 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 |
| 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 |
| 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 |
| 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
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