// SPECIES PROFILE · ANNUAL · NATIVE

Narrowpoint knotweed

Polygonum leptocarpum

Narrowpoint knotweed (Polygonum leptocarpum) is a annual in the — family. Native range includes KS — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2a–7a.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to KS, MT, ND, SD
USDA hardiness: Zones 2a–7a
Mature size: —
Sun: —
Water: —
Bloom: —
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Narrowpoint knotweed (Polygonum leptocarpum) — *Polygonum leptocarpum* — Narrowpoint knotweed. Photo by Daniel Atha via Wikimedia Commons (CC0).

Field Notes

[ growing · ecology · siting · care ]

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, narrowpoint knotweed pairs naturally with: Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Prairie groundsel (Packera plattensis), Rocky mountain bee-plant (Peritoma serrulata).