// SPECIES PROFILE · PERENNIAL · NATIVE

Yellow sundrops

Calylophus serrulatus

Yellow sundrops (Calylophus serrulatus) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10b. Blooms Apr–Jul.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 20 U.S. states, including AR, AZ, CO, IA, IL, IN…
USDA hardiness: Zones 2a–10b
Mature size: —
Sun: Full sun
Water: —
Bloom: Apr–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Yellow sundrops (Calylophus serrulatus) — *Calylophus serrulatus* — Yellow sundrops. Photo by NPS Photo by Jim Pisarowicz via Wikimedia Commons (Public domain).

Field Notes

[ growing · ecology · siting · care ]

Yellow sundrops (Calylophus serrulatus) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–10b. Blooms Apr–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, yellow sundrops pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Sneezeweed (Helenium autumnale), Wild Bergamot (Monarda fistulosa).