// SPECIES PROFILE · ANNUAL · NATIVE

Annual buckwheat

Eriogonum annuum

Annual buckwheat (Eriogonum annuum) is a annual in the — family. Native range includes AR, KS, OK. Hardy in zones 2a–10a. Mature size 29"–6'. Blooms Apr–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 14 U.S. states, including AR, CO, IL, IN, KS, MN…
USDA hardiness: Zones 2a–10a
Mature size: 29"–6'
Sun: Full sun
Water: Low · xeric
Bloom: Apr–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Annual buckwheat (Eriogonum annuum) — *Eriogonum annuum* — Annual buckwheat. Photo via iNaturalist — (c) Austin Saunders, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Annual buckwheat (Eriogonum annuum) is a annual in the — family. Native range includes AR, KS, OK. Hardy in zones 2a–10a. Mature size 29"–6'. Blooms Apr–Nov. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

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, annual buckwheat pairs naturally with: Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Prairie groundsel (Packera plattensis), Swamp verbena (Verbena hastata).