// SPECIES PROFILE · PERENNIAL · NATIVE

Bog willowherb

Epilobium leptophyllum

Bog willowherb (Epilobium leptophyllum) is a perennial in the — family. Native range includes KS, MO. Hardy in zones 1a–9b. Mature size 6"–3'. Blooms Jun–Aug.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 36 U.S. states, including AK, CO, CT, IA, ID, IL…
USDA hardiness: Zones 1a–9b
Mature size: 6"–3'
Sun: Part shade
Water: High · moisture-loving
Bloom: Jun–Aug
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Bog willowherb (Epilobium leptophyllum) — *Epilobium leptophyllum* — Bog willowherb. Photo by Robert H. Mohlenbrock via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Bog willowherb (Epilobium leptophyllum) is a perennial in the — family. Native range includes KS, MO. Hardy in zones 1a–9b. Mature size 6"–3'. Blooms Jun–Aug.

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, bog willowherb pairs naturally with: Lady Fern (Athyrium filix-femina), Wild Strawberry (Fragaria virginiana), Yarrow (Achillea millefolium), Common selfheal (Prunella vulgaris).