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The Oleander is generally described as a perennial tree or shrub. This is not native to the U.S. (United States) and has its most active growth period in the spring and summer and fall . The Oleander has green foliage and inconspicuous red flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are retained year to year. The Oleander has a moderate life span relative to most other plant species and a rapid growth rate. At maturity, the typical Oleander will reach up to 12 feet high, with a maximum height at 20 years of 12 feet.
The Oleander is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, cuttings, 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 14°F. has high tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Rapid |
| General Type | Tree, Shrub |
| Growth Period | Spring, Summer, Fall |
| Growth Duration | Perennial |
| Lifespan | Moderate |
| Plant Nativity | Introduced to U.S. |
| Commercial Availability | Routinely Available |
| Bloom Period | Summer |
|---|---|
| Displays Fall Colors | Yes |
| Shape/Growth Form | Multiple Stem |
| Drought Tolerance | High |
| Shade Tolerance | Intolerant |
| Height When Mature | 12 |
| Vegetative Spread | None |
| Flower Color | Red |
| Flower Conspicuousness | Yes |
| Fruit/Seed Abundance | Medium |
| Fruit/Seed Seasonality | Summer Fall |
| Seed Spread Rate | Slow |
| Propagations (Ways to Grow) | Bare Root, Container, Cuttings, Seed |
|---|---|
| Moisture Requirements | Low |
| Cold Stratification Required | No |
| Minimum Temperature | 14 |
| Soil Depth for Roots | 16 |
| Toxic to Nearby Plants | No |
| Toxic to Livestock | No |
| After-Harvest Resprout Ability | Yes |
| Responds to Coppicing | Yes |
| pH Range | 5.5–7.8 pH |
|---|---|
| Precipitation Range | 14–14 inches/yr |
| Planting Density | 700–1200 indiv./acre |
| Soil Textures | Coarse, Fine, Medium |
| Soil Depth for Roots | 16 |
| Minimum Frost-Free Days | 230 day(s) |
| Salinity Tolerance | Medium |
| CaCO3 Tolerance | Low |
| Leaf Retention | Yes |
|---|---|
| Fire Resistant | Yes |
| 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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