Stiff Clubmoss (Annotinum)

The Stiff Clubmoss (Annotinum) is generally described as a perennial subshrub or forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring and summer and fall . 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 Stiff Clubmoss (Annotinum) has a long life span relative to most other plant species and a moderate growth rate. At maturity, the typical Stiff Clubmoss (Annotinum) will reach up to 1 foot high, with a maximum height at 20 years of 0 inches.

The Stiff Clubmoss (Annotinum) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by sprigs. Note that cold stratification is not required for seed germination and the plant cannot survive exposure to temperatures below -43°F. has none tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Subshrub, Forb/herb
Growth Period Spring, Summer, Fall
Growth Duration Perennial
Lifespan Long
Plant Nativity Native to U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Late Summer
Displays Fall Colors No
Shape/Growth Form Stoloniferous
Drought Tolerance None
Shade Tolerance Tolerant
Height When Mature 1
Vegetative Spread Moderate
Flower Color Green
Flower Conspicuousness No
Fruit/Seed Abundance None
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate None
Gardening Characteristics
Propagations (Ways to Grow) Sprigs
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -43
Soil Depth for Roots 10
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 4–5.3 pH
Precipitation Range 32–32 inches/yr
Planting Density 2700–4800 indiv./acre
Soil Textures Coarse, Fine, Medium
Soil Depth for Roots 10
Minimum Frost-Free Days 100 day(s)
Salinity Tolerance None
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Fire Resistant No
Causes Livestock Bloating None

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