// SPECIES PROFILE · PERENNIAL · NATIVE

Longstyle sweetroot

Osmorhiza longistylis

Longstyle sweetroot (Osmorhiza longistylis) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10a. Mature size 6"–3'. Blooms Apr–May.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 40 U.S. states, including AL, AR, CO, CT, DC, DE…
USDA hardiness: Zones 2a–10a
Mature size: 6"–3'
Sun: Full shade
Water: —
Bloom: Apr–May
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Longstyle sweetroot (Osmorhiza longistylis) — *Osmorhiza longistylis* — Longstyle sweetroot. Photo by Mason Brock (Masebrock) via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Longstyle sweetroot (Osmorhiza longistylis) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10a. Mature size 6"–3'. Blooms Apr–May.

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, longstyle sweetroot pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Gray Goldenrod (Solidago nemoralis), Lady Fern (Athyrium filix-femina), Wild Bergamot (Monarda fistulosa).