Mexican Hat
Ratibida columnifera
Whimsical cone-shaped flowers in yellow and maroon nod above the foliage, spreading freely through wildflower meadows.
Hardy in USDA zones 4-9 and adaptable to the low desert; fully winter-dormant, dying back in frost and returning from roots and abundant seed each spring.
AMWUA Notes
A long-blooming, moderate-water meadow perennial that self-sows into cheerful drifts for pollinators.
Care Guide
Water every 1-2 weeks in summer for continuous bloom; it is fairly drought tolerant once its taproot is deep and tolerates lean soil.
Deadhead or shear spent sombrero-shaped flowers to extend bloom and limit self-sowing; cut the clump back in late fall after frost.
None needed; rich soil makes it flop and spread aggressively.
Trouble-free; its main quirk is enthusiastic reseeding rather than any pest.
Herbaceous perennial that blooms spring through fall and dies back in winter; reseeds freely, so thin volunteers to control spread.
Soil, Feeding & Propagation
Adaptable to lean, rocky, sandy, or clay soils; tolerant of poor ground; too-rich soil makes it flop.
Needs well-drained soil.
None — thrives in lean desert soil without fertilizer.
Seed; reseeds freely, so thin volunteers to control spread. Has a taproot and transplants poorly.
2 ft
Taproot resents transplanting; the chief concern is enthusiastic self-sowing, so deadhead in tidy beds.
Placement Tips
- •Best in a naturalistic meadow or pollinator patch where it can reseed and roam freely.
- •Mass for a moving field of nodding yellow-and-maroon hats rather than formal rows.
- •Deadhead if you want to curb its vigorous self-sowing in tidier beds.
- •Full sun; tolerates heat and reflected warmth, and its airy stems mix well with grasses.
Features
Best Uses
Ecological Value
Attracts
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Mexican Hat. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.
Mexican Hat — common questions
Answers for low-desert Phoenix conditions, drawn from this plant’s growing data.
How much water does Mexican Hat need in Phoenix?
Mexican Hat is a moderate-water perennial once established. Water every 1-2 weeks in summer for continuous bloom; it is fairly drought tolerant once its taproot is deep and tolerates lean soil. A long-blooming, moderate-water meadow perennial that self-sows into cheerful drifts for pollinators.
How big does Mexican Hat get?
Expect roughly 3 ft tall and 6 ft wide at maturity, with a fast growth rate. Allow about 2 ft of spacing when planting. Taproot resents transplanting; the chief concern is enthusiastic self-sowing, so deadhead in tidy beds.
Can you plant Mexican Hat near a pool?
Yes. Mexican Hat is considered pool-friendly, meaning it stays clean enough around water features and hardscape. Litter is rated low.
Can Mexican Hat handle Arizona heat and winter frost?
Mexican Hat is hardy in USDA 9-11 and wants full sun. Hardy in USDA zones 4-9 and adaptable to the low desert; fully winter-dormant, dying back in frost and returning from roots and abundant seed each spring. Herbaceous perennial that blooms spring through fall and dies back in winter; reseeds freely, so thin volunteers to control spread.
Does Mexican Hat have thorns?
No. Mexican Hat is thornless, so it is safe alongside walkways, patios and play areas.
Is Mexican Hat safe around pets?
Mexican Hat 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 Mexican Hat bloom in Arizona?
Mexican Hat blooms in spring-fall, with yellow/maroon flowers. The bloom draws bees, butterflies.
How much maintenance does Mexican Hat need?
Mexican Hat is low-maintenance. Leaf, flower and pod litter is rated low. Deadhead or shear spent sombrero-shaped flowers to extend bloom and limit self-sowing; cut the clump back in late fall after frost.
What kind of soil does Mexican Hat need?
Adaptable to lean, rocky, sandy, or clay soils; tolerant of poor ground; too-rich soil makes it flop. It needs no supplemental feeding. None needed; rich soil makes it flop and spread aggressively.
Is Mexican Hat native to Arizona?
No. Mexican Hat is not an Arizona native; it originates from the North America, Canada, Mexico, but it is grown successfully in low-desert landscapes here.