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The Missouri Ironweed (Missurica) 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 and summer . The Missouri Ironweed (Missurica) has green foliage and inconspicuous purple flowers, with a smattering of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the late summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Missouri Ironweed (Missurica) has a moderate life span relative to most other plant species and a moderate growth rate. At maturity, the typical Missouri Ironweed (Missurica) will reach up to 6 feet high, with a maximum height at 20 years of 0 inches.
The Missouri Ironweed (Missurica) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, container, seed, sprigs. 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 -33°F. has low tolerance to drought and restricted water conditions.
| Category | |
|---|---|
| Growth Rate | Moderate |
| General Type | Forb/herb |
| Growth Period | Spring, Summer |
| Growth Duration | Perennial |
| Lifespan | Moderate |
| Plant Nativity | Native to U.S. |
| Commercial Availability | Routinely Available |
| Bloom Period | Late Summer |
|---|---|
| Displays Fall Colors | Yes |
| Shape/Growth Form | Single Crown |
| Drought Tolerance | Low |
| Shade Tolerance | Intolerant |
| Height When Mature | 6 |
| Vegetative Spread | None |
| Flower Color | Purple |
| Flower Conspicuousness | Yes |
| Fruit/Seed Abundance | Low |
| Fruit/Seed Seasonality | Summer Fall |
| Seed Spread Rate | Slow |
| Propagations (Ways to Grow) | Bare Root, Container, Seed, Sprigs |
|---|---|
| Moisture Requirements | Medium |
| Cold Stratification Required | Yes |
| Minimum Temperature | -33 |
| Soil Depth for Roots | 8 |
| Toxic to Nearby Plants | No |
| Toxic to Livestock | No |
| After-Harvest Regrowth Rate | None |
| After-Harvest Resprout Ability | No |
| Responds to Coppicing | No |
| pH Range | 5–7 pH |
|---|---|
| Precipitation Range | 34–34 inches/yr |
| Planting Density | 2700–4800 indiv./acre |
| Soil Textures | Coarse, Fine, Medium |
| Soil Depth for Roots | 8 |
| Minimum Frost-Free Days | 165 day(s) |
| Salinity Tolerance | None |
| CaCO3 Tolerance | Medium |
| Leaf Retention | No |
|---|---|
| Palatability | Low |
| 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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