// SPECIES PROFILE · ANNUAL · NATIVE

Canada toadflax

Nuttallanthus canadensis

Canada toadflax (Nuttallanthus canadensis) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Blooms Mar–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 39 U.S. states, including AL, AR, CA, CT, DC, DE…
USDA hardiness: Zones 2b–11b
Mature size: —
Sun: Full sun
Water: —
Bloom: Mar–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Canada toadflax (Nuttallanthus canadensis) — *Nuttallanthus canadensis* — Canada toadflax. Photo by Pollinator at English Wikipedia via Wikimedia Commons (CC BY-SA 3.0).

Field Notes

[ growing · ecology · siting · care ]

Canada toadflax (Nuttallanthus canadensis) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Blooms Mar–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, canada toadflax pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Slim amaranth (Amaranthus hybridus).