Tufted Evening Primrose
Oenothera cespitosa
A fragrant dusk-blooming groundcover with white flowers that fade to pink, attracting hawk moths and birds.
A cold-hardy Western native good in USDA zones 4-9, it easily takes low-desert frost while tolerating summer heat as long as drainage is excellent.
AMWUA Notes
A low-water native for evening and wildlife gardens; keep it lean and dry, as rich moist soil shortens its life.
Care Guide
Water every 2-3 weeks once established and allow the soil to dry between; this low-water native rots in soggy, poorly drained ground.
Trim spent flower stalks and tidy tattered leaves; it forms a low tuft and needs no shearing beyond deadheading.
No fertilizer is needed; feeding produces soft growth prone to rot in a low-water native bed.
Flea beetles may chew the foliage and root rot appears in wet soil; otherwise trouble-free.
Large fragrant white flowers open at dusk spring through fall and fade to pink by morning; the tuft goes semi-dormant in the coldest weeks and rebounds with warmth.
Soil, Feeding & Propagation
Needs lean, gravelly or sandy, sharply drained soil; native to rocky calcareous ground and rots in rich or moist beds.
Needs sharp, fast-draining soil.
None — thrives in lean desert soil without fertilizer.
Seed sown in fall or winter; the deep taproot makes division impractical.
1.5-2 ft on center at the front of native beds
Deep taproot resents disturbance and transplanting; the plant is non-invasive and well behaved.
Placement Tips
- •Set 18-24 in apart at the front of native and pollinator beds where evening fragrance is enjoyed.
- •Excellent in rock gardens and gravel mulch with the sharp drainage it demands.
- •Place along patios and paths so the dusk-opening flowers and hawk-moth visitors can be seen up close.
- •Give full sun; it will not bloom or thrive in shade.
Features
Best Uses
Ecological Value
Attracts
Wildlife Value
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Tufted Evening Primrose. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.