// SPECIES PROFILE · PERENNIAL · NATIVE

Threetooth ragwort

Packera tridenticulata

Threetooth ragwort (Packera tridenticulata) is a perennial in the — family. Native range includes KS, OK. Hardy in zones 2a–10a. Blooms May–Jul.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 9 U.S. states, including CO, KS, ND, NE, NM, OK…
USDA hardiness: Zones 2a–10a
Mature size: —
Sun: —
Water: —
Bloom: May–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Threetooth ragwort (Packera tridenticulata) — *Packera tridenticulata* — Threetooth ragwort. Photo via iNaturalist — (c) psweet, some rights reserved (CC BY-SA).

Field Notes

[ growing · ecology · siting · care ]

Threetooth ragwort (Packera tridenticulata) is a perennial in the — family. Native range includes KS, OK. Hardy in zones 2a–10a. Blooms May–Jul.

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, threetooth ragwort pairs naturally with: Aromatic Aster (Symphyotrichum oblongifolium), Broadleaf Arrowhead (Sagittaria latifolia), Carolina Larkspur (Delphinium carolinianum), Gray Goldenrod (Solidago nemoralis).