// SPECIES PROFILE · PERENNIAL · NATIVE

Howard's evening primrose

Oenothera howardii

Howard's evening primrose (Oenothera howardii) is a perennial in the — family. Native range includes KS — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2a–9b. Mature size 1"–8". Blooms May–Jul.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to CO, KS, NV, UT, WY
USDA hardiness: Zones 2a–9b
Mature size: 1"–8"
Sun: —
Water: —
Bloom: May–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Howard's evening primrose (Oenothera howardii) — *Oenothera howardii* — Howard's evening primrose. Photo via iNaturalist — (c) Rajan Rao, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

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, howard's evening primrose pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Sneezeweed (Helenium autumnale), Swamp Milkweed (Asclepias incarnata).