// SPECIES PROFILE · ANNUAL · NATIVE

Trumpet evening-primrose

Oenothera jamesii

Trumpet evening-primrose (Oenothera jamesii) is a annual in the — family. Native range includes KS, OK. Hardy in zones 5b–10a. Mature size 29"–6'. Blooms Jul–Oct.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to KS, OK, TX
USDA hardiness: Zones 5b–10a
Mature size: 29"–6'
Sun: Full sun
Water: —
Bloom: Jul–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Trumpet evening-primrose (Oenothera jamesii) — *Oenothera jamesii* — Trumpet evening-primrose. Photo via iNaturalist — (c) Tony Rebelo, some rights reserved (CC BY-SA).

Field Notes

[ growing · ecology · siting · care ]

Trumpet evening-primrose (Oenothera jamesii) is a annual in the — family. Native range includes KS, OK. Hardy in zones 5b–10a. Mature size 29"–6'. Blooms Jul–Oct.

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, trumpet evening-primrose pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Indian Blanket (Gaillardia pulchella), Lemon Beebalm (Monarda citriodora).