// SPECIES PROFILE · ANNUAL · NATIVE

Camphorweed

Heterotheca subaxillaris

Camphorweed (Heterotheca subaxillaris) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 29"–6'. Blooms Jul–Nov.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 31 U.S. states, including AL, AR, AZ, CA, CO, CT…
USDA hardiness: Zones 2b–11b
Mature size: 29"–6'
Sun: —
Water: —
Bloom: Jul–Nov
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Camphorweed (Heterotheca subaxillaris) — *Heterotheca subaxillaris* — Camphorweed. Photo by MathKnight via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Camphorweed (Heterotheca subaxillaris) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 29"–6'. Blooms Jul–Nov.

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, camphorweed pairs naturally with: Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Annual ragweed (Ambrosia artemisiifolia var. artemisiifolia), Devil's beggartick (Bidens frondosa).