Prairie Wedgescale (Obtusata)

The Prairie Wedgescale (Obtusata) is generally described as a perennial graminoid. This is native to the U.S. (United States) has its most active growth period in the spring . The greatest bloom is usually observed in the spring, with fruit and seed production starting in the summer and continuing until summer. Leaves are not retained year to year. The Prairie Wedgescale (Obtusata) has a short life span relative to most other plant species and a moderate growth rate. At maturity, the typical Prairie Wedgescale (Obtusata) will reach up to 3.2 feet high, with a maximum height at 20 years of 0 inches.

The Prairie Wedgescale (Obtusata) is usually not commercially available except under contract. It can be propagated by container, 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 -43°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Graminoid
Growth Period Spring
Growth Duration Annual, Perennial
Lifespan Short
Plant Nativity Native to U.S.
Commercial Availability Contracting Only
Physical Characteristics
Bloom Period Spring
Displays Fall Colors No
Shape/Growth Form Bunch
Drought Tolerance Low
Shade Tolerance Intermediate
Height When Mature 3.2
Vegetative Spread None
Flower Color Green
Flower Conspicuousness No
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Summer
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Container, Seed
Moisture Requirements Medium
Cold Stratification Required No
Minimum Temperature -43
Soil Depth for Roots 4
Toxic to Nearby Plants No
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 5–7.5 pH
Precipitation Range 10–10 inches/yr
Planting Density 10912–43560 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 4
Minimum Frost-Free Days 80 day(s)
Salinity Tolerance None
CaCO3 Tolerance Medium
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No
Causes Livestock Bloating None

Source: USDA, NRCS, PLANTS Database,
National Plant Data Center, Baton Rouge, LA 70874-4490 USA