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The Bog Willowherb (Leptophyllum) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring . The Bog Willowherb (Leptophyllum) 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 not retained year to year. The Bog Willowherb (Leptophyllum) has a moderate life span relative to most other plant species and a slow growth rate. At maturity, the typical Bog Willowherb (Leptophyllum) will reach up to 3.6 feet high, with a maximum height at 20 years of 0 inches.
The Bog Willowherb (Leptophyllum) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, seed. It has a slow 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 -33°F. has low tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Slow |
| General Type | Forb/herb |
| Growth Period | Spring |
| Growth Duration | Perennial |
| Lifespan | Moderate |
| Plant Nativity | Native to U.S. |
| Commercial Availability | No Known Source |
| Bloom Period | Summer |
|---|---|
| Displays Fall Colors | No |
| Shape/Growth Form | Single Stem |
| Drought Tolerance | Low |
| Shade Tolerance | Intermediate |
| Height When Mature | 3.6 |
| 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, Seed |
|---|---|
| Moisture Requirements | High |
| Cold Stratification Required | No |
| Minimum Temperature | -33 |
| Soil Depth for Roots | 10 |
| Toxic to Nearby Plants | Yes |
| Toxic to Livestock | No |
| After-Harvest Regrowth Rate | Slow |
| After-Harvest Resprout Ability | No |
| Responds to Coppicing | No |
| pH Range | 4–6.5 pH |
|---|---|
| Precipitation Range | 15–15 inches/yr |
| Planting Density | 3450–10912 indiv./acre |
| Soil Textures | Fine, Medium |
| Soil Depth for Roots | 10 |
| Minimum Frost-Free Days | 80 day(s) |
| Salinity Tolerance | None |
| CaCO3 Tolerance | Low |
| 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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