// SPECIES PROFILE · ANNUAL · NATIVE

Stiff yellow flax

Linum medium

Stiff yellow flax (Linum medium) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 3a–11b. Mature size 1"–32". Blooms Mar–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 33 U.S. states, including AL, AR, CT, DC, DE, FL…
USDA hardiness: Zones 3a–11b
Mature size: 1"–32"
Sun: —
Water: —
Bloom: Mar–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Stiff yellow flax (Linum medium) — *Linum medium* — Stiff yellow flax. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Stiff yellow flax (Linum medium) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 3a–11b. Mature size 1"–32". 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, stiff yellow flax pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Common threeseed mercury (Acalypha rhomboidea).