Roughleaf Ricegrass
Oryzopsis asperifolia
- Native to:
- Canada, Prince Edward I., United States, Virgin Islands
iNaturalist: © chuckt2007 (iNaturalist #310948789)






Taxonomy
- Division:
- Magnoliophyta | - Flowering plants
- Family:
- Poaceae
- Genus:
- Oryzopsis
- Species:
- Oryzopsis asperifolia
- USDA Symbol:
- ORAS
Growth Characteristics
- Life Cycle:
- Perennial
- Growth Habit:
- Graminoid
- Height:
- 60 cm
- Light Requirements:
- Part Shade
- Drought Tolerance:
- Medium
- Bloom Months:
- may,jun
Wildlife Benefits
- Butterflies & Moths:
- ★★☆☆☆ Documented Lepidoptera association (GBIF)
Garden & Ecology Notes
- Wildlife Value:
- birds, small mammals
Soil Requirements
- Soil Type:
- moist, well-drained, organic-rich soil
- pH:
- 5.0 - 7.0 (slightly acidic to neutral)
- Drainage:
- good drainage required
- Moisture:
- consistently moist
- Notes:
- prefers cool, shaded forest floors
Propagation & Germination
- Stratification:
- Cold/moist stratification required — 30–60 days
- Germination Time:
- 14–30 days
- Notes:
- Seeds benefit from cold moist stratification for 30-60 days to break dormancy.
Where to Buy
Nationwide Seller
- Prairie Moon Nursery (nursery and seeds)