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The Western Larch (Occidentalis) is generally described as a perennial tree. This is native to the U.S. (United States) has its most active growth period in the spring and summer . The greatest bloom is usually observed in the spring, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Western Larch (Occidentalis) has a long life span relative to most other plant species and a rapid growth rate. At maturity, the typical Western Larch (Occidentalis) will reach up to 200 feet high, with a maximum height at 20 years of 40 feet.
The Western Larch (Occidentalis) generally appears in field collections and doesn't tend to be commercially available. It can be propagated by bare root, container, cuttings, seed. It has a moderate 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 -43°F. has low tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Rapid |
| General Type | Tree |
| Growth Period | Spring, Summer |
| Growth Duration | Perennial |
| Lifespan | Long |
| Plant Nativity | Native to U.S. |
| Commercial Availability | Field Collections Only |
| Bloom Period | Spring |
|---|---|
| Displays Fall Colors | Yes |
| Shape/Growth Form | Single Stem |
| Drought Tolerance | Low |
| Shade Tolerance | Intolerant |
| Height When Mature | 200 |
| Vegetative Spread | None |
| Flower Color | Red |
| Flower Conspicuousness | No |
| Fruit/Seed Abundance | High |
| Fruit/Seed Seasonality | Summer Fall |
| Seed Spread Rate | Moderate |
| Propagations (Ways to Grow) | Bare Root, Container, Cuttings, Seed |
|---|---|
| Moisture Requirements | Low |
| Cold Stratification Required | Yes |
| Minimum Temperature | -43 |
| Soil Depth for Roots | 20 |
| Toxic to Nearby Plants | No |
| Toxic to Livestock | No |
| After-Harvest Regrowth Rate | Rapid |
| After-Harvest Resprout Ability | No |
| Responds to Coppicing | No |
| pH Range | 6–7 pH |
|---|---|
| Precipitation Range | 13–13 inches/yr |
| Planting Density | 430–1200 indiv./acre |
| Soil Textures | Coarse, Medium |
| Soil Depth for Roots | 20 |
| Minimum Frost-Free Days | 60 day(s) |
| Salinity Tolerance | None |
| CaCO3 Tolerance | Low |
| Leaf Retention | No |
|---|---|
| Palatability | Low |
| 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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