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
Love Tufted Evening Primrose? Our landscape team sources from wholesale nurseries and can incorporate it into your design.
Talk to a Dream BuilderGet a Project EstimateAlready a Client?
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.
Tufted Evening Primrose — common questions
Answers for low-desert Phoenix conditions, drawn from this plant’s growing data.
How much water does Tufted Evening Primrose need in Phoenix?
Tufted Evening Primrose is a low-water groundcover once established. Water every 2-3 weeks once established and allow the soil to dry between; this low-water native rots in soggy, poorly drained ground. A low-water native for evening and wildlife gardens; keep it lean and dry, as rich moist soil shortens its life.
How big does Tufted Evening Primrose get?
Expect roughly 1 ft tall and 2 ft wide at maturity, with a moderate growth rate. Allow about 1.5-2 ft on center at the front of native beds of spacing when planting. Deep taproot resents disturbance and transplanting; the plant is non-invasive and well behaved.
Can you plant Tufted Evening Primrose near a pool?
Yes. Tufted Evening Primrose is considered pool-friendly, meaning it stays clean enough around water features and hardscape. Litter is rated low.
Can Tufted Evening Primrose handle Arizona heat and winter frost?
Tufted Evening Primrose is hardy in USDA 9-11 and wants full sun. 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. 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.
Does Tufted Evening Primrose have thorns?
No. Tufted Evening Primrose is thornless, so it is safe alongside walkways, patios and play areas.
Is Tufted Evening Primrose safe around pets?
Tufted Evening Primrose is listed as pet-friendly in this guide. If your dog is a determined chewer, check any new plant with your vet before planting.
When does Tufted Evening Primrose bloom in Arizona?
Tufted Evening Primrose blooms in spring-fall, with white fading to pink flowers. The flowers are fragrant. The bloom draws hawk moths, bees.
How much maintenance does Tufted Evening Primrose need?
Tufted Evening Primrose is low-maintenance. Leaf, flower and pod litter is rated low. Trim spent flower stalks and tidy tattered leaves; it forms a low tuft and needs no shearing beyond deadheading.
What kind of soil does Tufted Evening Primrose need?
Needs lean, gravelly or sandy, sharply drained soil; native to rocky calcareous ground and rots in rich or moist beds. It needs no supplemental feeding. No fertilizer is needed; feeding produces soft growth prone to rot in a low-water native bed.
Is Tufted Evening Primrose native to Arizona?
No. Tufted Evening Primrose is not an Arizona native; it originates from the Western US, northern Mexico, but it is grown successfully in low-desert landscapes here.