Plant types and subtypes: Perennials
Light Requirements: sun, part-sun
Water Use: high
Soil Moisture: moist, wet
Soil Description: average, poor, loam, clay, sand
Bloom Time: June, July, August, September
Bloom Color: white, pink
Leaf Color: gray-green
Hardiness Zone: 2, 3, 4, 5, 6
Additional Tags: bog plant, clumping, colonizing, naturalizing, ornamental foliage, pond margin plant, stream margin plant, swamp plant
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Epilobium leptophyllumAlso known as:
Epilobium nesophilum, Epilobium rosmarinifolium, Epilobium treleaseanum
Epilobium leptophyllum is a 3' tall, multi-stemmed native herb, with a shrubby appearance. The leaves are needle-like, only 1/16" wide and up to 2 1/4" long. Both the stems and the leaves are covered with minute hairs, giving the plant an overall a grayish tinge. Single, whitish small flowers emerge on short stalks from the upper leaves' axils. These give way to 2 1/4" long, grayish cylindrical seed capsules.
As the common name, bog willowherb, would indicate, this is a moisture loving species, adapted to bogs, swamps and wetland environments. It enjoys nutrient poor, wet soil. It can be grown in soil that is consistently moist, but has no tolerance to drought or dry conditions. It prefers a position in full to part-sun. It is a slow grower that will form colonies by means of stolons, without becoming aggressive. Bloom times will vary depending on geographic location, from June to September. A colder climate species: zones 2-6
Propagate by clump or root division. Can be propagated from seed without pretreatment.
Bog willowherb is an unusual plant, and a good choice for a cool, wet spot in the garden. Ironically, its overall appearance is reminiscent of that of herbs grown in dry Mediterranean gardens.
Native Range & Classification
Recorded County Distribution: USDA data
CA, CO, CT, IA, ID, IL, IN, KS, KY, MA, MD, ME, MI, MN, MO, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SD, TN, UT, VA, VT, WA, WI, WV, WY
USDA Endangered Status:
- Threatened: TN
|Family||Onagraceae||Evening Primrose family|
|Species||Epilobium leptophyllum||bog willowherb|