// SPECIES PROFILE · ANNUAL · NATIVE

Hooker's evening-primrose

Oenothera elata ssp. hirsutissima

Hooker's evening-primrose (Oenothera elata ssp. hirsutissima) is a annual in the — family. Native range includes KS, OK. Hardy in zones 2a–11a. Mature size 38"–8'. Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 14 U.S. states, including AZ, CA, CO, ID, KS, MT…
USDA hardiness: Zones 2a–11a
Mature size: 38"–8'
Sun: Full sun
Water: High · moisture-loving
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Hooker's evening-primrose (Oenothera elata ssp. hirsutissima) — *Oenothera elata ssp. hirsutissima* — Hooker's evening-primrose. Photo via iNaturalist — (c) Ken-ichi Ueda, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Hooker's evening-primrose (Oenothera elata ssp. hirsutissima) is a annual in the — family. Native range includes KS, OK. Hardy in zones 2a–11a. Mature size 38"–8'. Blooms Jun–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, hooker's evening-primrose pairs naturally with: Common Sunflower (Helianthus annuus), Rocky mountain bee-plant (Peritoma serrulata), Swamp verbena (Verbena hastata), Powell's amaranth (Amaranthus powellii).