Bog Willowherb (Leptophyllum)

The Bog Willowherb (Leptophyllum) 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 . The Bog Willowherb (Leptophyllum) has green foliage and inconspicuous red flowers, with a moderate amount of conspicuous brown fruits or seeds. The greatest bloom is usually observed in the summer, with fruit and seed production starting in the summer and continuing until fall. Leaves are not retained year to year. The Bog Willowherb (Leptophyllum) has a moderate life span relative to most other plant species and a slow growth rate. At maturity, the typical Bog Willowherb (Leptophyllum) will reach up to 3.6 feet high, with a maximum height at 20 years of 0 inches.

The Bog Willowherb (Leptophyllum) is not commonly available from nurseries, garden stores and other plant dealers and distributors. It can be propagated by bare root, 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 -33°F. has low tolerance to drought and restricted water conditions.

Plant Basics
Category
Growth Rate Slow
General Type Forb/herb
Growth Period Spring
Growth Duration Perennial
Lifespan Moderate
Plant Nativity Native to U.S.
Commercial Availability No Known Source
Physical Characteristics
Bloom Period Summer
Displays Fall Colors No
Shape/Growth Form Single Stem
Drought Tolerance Low
Shade Tolerance Intermediate
Height When Mature 3.6
Vegetative Spread None
Flower Color Red
Flower Conspicuousness Yes
Fruit/Seed Abundance Medium
Fruit/Seed Seasonality Summer Fall
Seed Spread Rate Slow
Gardening Characteristics
Propagations (Ways to Grow) Bare Root, Seed
Moisture Requirements High
Cold Stratification Required No
Minimum Temperature -33
Soil Depth for Roots 10
Toxic to Nearby Plants Yes
Toxic to Livestock No
After-Harvest Regrowth Rate Slow
After-Harvest Resprout Ability No
Responds to Coppicing No
Growth Requirements
pH Range 4–6.5 pH
Precipitation Range 15–15 inches/yr
Planting Density 3450–10912 indiv./acre
Soil Textures Fine, Medium
Soil Depth for Roots 10
Minimum Frost-Free Days 80 day(s)
Salinity Tolerance None
CaCO3 Tolerance Low
Sustainability & Use
Leaf Retention No
Palatability Medium
Fire Resistant No
Causes Livestock Bloating None

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