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Epilobium leptophyllum

bog willowherb add to wishlist

Plant types and subtypes: Perennials

Light Requirements: sun, part-sun

Water Use: high

Soil Moisture: moist, wet

Soil Description: average, poor, loam, clay, sand

Height: 2'-3'

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

Epilobium leptophyllum (bog willowherb)
  • Epilobium leptophyllum (bog willowherb)

Pricing & Availability

Description

Epilobium leptophyllum

Also known as:

bog willowherb

,

linear-leaved willow-herb

Scientific Synonyms:

Epilobium nesophilum, Epilobium rosmarinifolium, Epilobium treleaseanum

Description

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.

Cultivation

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

Propagation

Propagate by clump or root division. Can be propagated from seed without pretreatment.

Additional Notes

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

Native Range:
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

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Rosidae
Order Myrtales
Family Onagraceae Evening Primrose family
Genus Epilobium willowherb
Species Epilobium leptophyllum bog willowherb