Virginia Water Horehound (Virginicus)

The Virginia Water Horehound (Virginicus) is generally described as a perennial forb/herb. This is native to the U.S. (United States) has its most active growth period in the spring and summer . The Virginia Water Horehound (Virginicus) has dark green foliage and inconspicuous white flowers, with a moderate amount of conspicuous black fruits or seeds. The greatest bloom is usually observed in the summer, with fruit and seed production starting in the fall and continuing until winter. Leaves are not retained year to year. The Virginia Water Horehound (Virginicus) has a moderate life span relative to most other plant species and a moderate growth rate. At maturity, the typical Virginia Water Horehound (Virginicus) will reach up to 4 feet high, with a maximum height at 20 years of 0 inches.

The Virginia Water Horehound (Virginicus) is easily found in nurseries, garden stores and other plant dealers and distributors. It can be propagated by seed, sprigs. It has a moderate 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 -33°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Growth Rate Moderate
General Type Forb/herb
Growth Period Spring, Summer
Growth Duration Perennial
Lifespan Moderate
Plant Nativity Native to U.S.
Commercial Availability Routinely Available
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Stoloniferous
Drought Tolerance Low
Shade Tolerance Tolerant
Height When Mature 4
Vegetative Spread Moderate
Flower Color White
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Fall Winter
Seed Spread Rate Moderate
Gardening Characteristics
Propagations (Ways to Grow) Seed, Sprigs
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -33
Soil Depth for Roots 6
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 5–6.3 pH
Precipitation Range 35–35 inches/yr
Planting Density 2700–10000 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 6
Minimum Frost-Free Days 110 day(s)
Salinity Tolerance None
CaCO3 Tolerance None
Sustainability & Use
Leaf Retention No
Palatability Low
Fire Resistant No

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