Purple Prickly Pear
Opuntia santa-rita
A showstopper prickly pear with vivid purple pads that intensify in winter cold, paired with bright pink spring blooms.
Cold hardy to around 10-15°F, USDA 9-11; adapted to Chihuahuan and Sonoran low and mid desert.
AMWUA Notes
Native and extremely drought tolerant; its purple color intensifies under low water.
Care Guide
Needs very little water once established; an occasional deep soak keeps pads plump, but overwatering fades the purple color and causes rot.
Remove damaged pads at the joint with gloves and tongs; thin to control the spread.
None needed; lean, dry conditions intensify the purple pad color.
Cochineal scale is the chief pest; wash off cottony colonies promptly.
Pads deepen to vivid purple with winter cold and drought stress, with bright pink flowers following in spring.
Soil, Feeding & Propagation
Lean, sharp-draining decomposed granite; low organic matter intensifies the purple color
Needs sharp, fast-draining soil.
None — thrives in lean desert soil without fertilizer.
Pads root readily after callusing; also seed
6 ft
Shallow, non-invasive roots; keep glochid-bearing pads off walkways and pool decks
Placement Tips
- •Site as a color specimen or in containers where the purple pads show.
- •Keep the glochid-bearing pads off walkways and pool decks.
- •Plant in lean, sharp-draining granite in full sun to maximize color.
- •Combine with silver and green cacti for contrast.
Features
Best Uses
Companion Plants
Quick Stats
Design Styles
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Use this care guide to maintain your Purple Prickly Pear. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.
Purple Prickly Pear — common questions
Answers for low-desert Phoenix conditions, drawn from this plant’s growing data.
How much water does Purple Prickly Pear need in Phoenix?
Purple Prickly Pear is a very low-water cactus once established. Needs very little water once established; an occasional deep soak keeps pads plump, but overwatering fades the purple color and causes rot. Native and extremely drought tolerant; its purple color intensifies under low water.
How big does Purple Prickly Pear get?
Expect roughly 10 ft tall and 6 ft wide at maturity, with a slow growth rate. Allow about 6 ft of spacing when planting. Shallow, non-invasive roots; keep glochid-bearing pads off walkways and pool decks.
Can you plant Purple Prickly Pear near a pool?
Not ideally. Purple Prickly Pear is not rated pool-friendly, so it is better placed away from the pool deck and skimmer. Litter is rated low.
Can Purple Prickly Pear handle Arizona heat and winter frost?
Purple Prickly Pear is hardy in USDA 9-11 and wants full sun. Cold hardy to around 10-15°F, USDA 9-11; adapted to Chihuahuan and Sonoran low and mid desert. Pads deepen to vivid purple with winter cold and drought stress, with bright pink flowers following in spring.
Does Purple Prickly Pear have thorns?
Yes — Purple Prickly Pear has medium thorns. Site it back from walkways, seating and pool decks where people brush past.
Is Purple Prickly Pear safe around pets?
Purple Prickly Pear 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 Purple Prickly Pear bloom in Arizona?
Purple Prickly Pear blooms in spring, with pink flowers.
How much maintenance does Purple Prickly Pear need?
Purple Prickly Pear is low-maintenance. Leaf, flower and pod litter is rated low. Remove damaged pads at the joint with gloves and tongs; thin to control the spread.
What kind of soil does Purple Prickly Pear need?
Lean, sharp-draining decomposed granite; low organic matter intensifies the purple color. It needs no supplemental feeding. None needed; lean, dry conditions intensify the purple pad color.
Is Purple Prickly Pear native to Arizona?
Yes. Purple Prickly Pear is native to Arizona and to the Chihuahuan and Sonoran Deserts, so it is adapted to local rainfall, soil and heat.