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The Koa is generally described as a perennial tree. This is native to the U.S. (United States) has its most active growth period in the year round . The greatest bloom is usually observed in the spring, with fruit and seed production starting in the spring and continuing until summer. Leaves are retained year to year. The Koa has a long life span relative to most other plant species and a moderate growth rate. At maturity, the typical Koa will reach up to 110 feet high, with a maximum height at 20 years of 100 feet.
The Koa 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 moderate 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 50°F. has medium tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Moderate |
| General Type | Tree |
| Growth Period | Year Round |
| Growth Duration | Perennial |
| Lifespan | Long |
| Plant Nativity | Native to U.S. |
| Commercial Availability | Routinely Available |
| Bloom Period | Spring |
|---|---|
| Displays Fall Colors | No |
| Shape/Growth Form | Single Stem |
| Drought Tolerance | Medium |
| Shade Tolerance | Intolerant |
| Height When Mature | 110 |
| Vegetative Spread | None |
| Flower Color | Yellow |
| Flower Conspicuousness | No |
| Fruit/Seed Abundance | Medium |
| Fruit/Seed Seasonality | Spring Summer |
| Seed Spread Rate | Moderate |
| Propagations (Ways to Grow) | Bare Root, Container, Cuttings, Seed |
|---|---|
| Moisture Requirements | Medium |
| Cold Stratification Required | No |
| Minimum Temperature | 50 |
| Soil Depth for Roots | 30 |
| Toxic to Nearby Plants | No |
| Toxic to Livestock | No |
| After-Harvest Resprout Ability | Yes |
| Responds to Coppicing | No |
| pH Range | 5.5–7 pH |
|---|---|
| Precipitation Range | 50–50 inches/yr |
| Planting Density | 300–700 indiv./acre |
| Soil Textures | Coarse, Fine, Medium |
| Soil Depth for Roots | 30 |
| Minimum Frost-Free Days | 365 day(s) |
| Salinity Tolerance | None |
| CaCO3 Tolerance | Medium |
| Leaf Retention | Yes |
|---|---|
| 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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