Stiff Cowbane
Oxypolis rigidior
- Native to:
- Canada, United States
Source: Wikimedia; Credit: Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. 3 vols. Charles Scribner's Sons, New York. Vol. 2: 638. Courtesy of Kentucky Native Plant Society. Scanne
Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Apiaceae
- Genus:
- Oxypolis
- Species:
- Oxypolis rigidior
- USDA Symbol:
- OXRI
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Forb/herb
- Height:
- 150 cm
- Drought Tolerance:
- Low
- Bloom Months:
- jul,aug,sep
- Bloom Colors:
- white
Wildlife Benefits
- Bees:
- ★☆☆☆☆ Documented bee visitation (GBIF)
- Butterflies & Moths:
- ★☆☆☆☆ Documented Lepidoptera association (GBIF)
- Caterpillars:
- ★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)
Host Plant for Caterpillars
Depressaria cinereocostella
Reported Fauna Sightings
Butterflies:Black Swallowtail (Papilio polyxenes)
Garden & Ecology Notes
- Wildlife Value:
- bees, wasps, flies, butterflies
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 60–90 days
- Germination Time:
- 14–42 days
- Notes:
- Seeds require cold-moist stratification and germinate best with light exposure. Fresh seed germinates more reliably than stored seed.