Fourpoint Evening PrimroseOenothera rhombipetala
Fourpoint Evening Primrose, a Minnesota species of Special Concern, doesn't produce flowers until its second year, boasting prolific yellow blossoms with diamond petals that bloom throughout the summer season. Like other Evening Primrose species its flowers don't open until dusk or in cloudy conditions. It prefers dry soils but still needs consistent watering to maintain its blooms.
USDA symbol: OERH
General Information
| Plant Type | Forb |
|---|---|
| Height | 1 to 3 feet |
| Light Exposure | Sun |
| Soil Moisture | Dry, Medium |
| Bloom Color | Yellow |
Tolerances
| Flooding / Inundation Tolerance | Moderate |
|---|---|
| General Resilience | 7 |
| Salt Tolerance | Medium |
Pollinator Value: High
| Bloom Months | July to September |
|---|---|
| Larval Host of | Bees |
| Specific Pollinators Hosted | Lasioglossum lusorium, Lasioglossum texanum |
| Pollinator Benefit | Insect Pollinated, Provides Nectar, Supports Generalists |
Project Planning
| Project Type | Erosion Control |
|---|---|
| Coefficient of Conservatism | 4 |
| Herbivore Sensitivity | Low |
| Lifespan | Biennial |
| Rate of Spread | Medium |
| Vegetative Reproduction | Absent |
Range
| County | Anoka, Chisago, Cottonwood, Hennepin, Houston, Wabasha, Washington |
|---|---|
| Ecoregion | Driftless Area, Lake Agassiz Plain, North Central Hardwood Forests, Northern Glaciated Plains, Western Cornbelt Plains |
| Approximate Eco Province | Eastern Broadleaf Forest, Prairie Parkland, Tallgrass Aspen Parklands |