// SPECIES PROFILE · SHRUB · NATIVE

Hartweg's sundrops

Calylophus hartwegii ssp. fendleri

Hartweg's sundrops (Calylophus hartwegii ssp. fendleri) is a shrub in the — family. Native range includes KS, OK. Hardy in zones 2b–10b. Blooms Apr–May.

// QUICK FACTS

Family: —
Group: shrub
Native range: Native to AZ, CO, KS, NM, OK, TX
USDA hardiness: Zones 2b–10b
Mature size: —
Sun: —
Water: —
Bloom: Apr–May
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Hartweg's sundrops (Calylophus hartwegii ssp. fendleri) — *Calylophus hartwegii ssp. fendleri* — Hartweg's sundrops. Photo via iNaturalist — no rights reserved.

Field Notes

[ growing · ecology · siting · care ]

Hartweg's sundrops (Calylophus hartwegii ssp. fendleri) is a shrub in the — family. Native range includes KS, OK. Hardy in zones 2b–10b. 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, hartweg's sundrops pairs naturally with: False Indigo Bush (Amorpha fruticosa), Smooth Sumac (Rhus glabra), Wild blue flax (Linum lewisii), Common elderberry (Sambucus nigra ssp. canadensis).