// SPECIES PROFILE · PERENNIAL · NATIVE

American water horehound

Lycopus americanus

American water horehound (Lycopus americanus) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Mature size 1"–20". Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 48 U.S. states, including AL, AR, AZ, CA, CO, CT…
USDA hardiness: Zones 2a–11b
Mature size: 1"–20"
Sun: Full shade
Water: High · moisture-loving
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

American water horehound (Lycopus americanus) — *Lycopus americanus* — American water horehound. Photo by Ayotte, Gilles, 1948- via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

American water horehound (Lycopus americanus) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Mature size 1"–20". Blooms Jun–Sep.

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, american water horehound pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Wild Strawberry (Fragaria virginiana), Yarrow (Achillea millefolium).