North America Native Plant

Redspine Fishhook Cactus

Botanical name: Echinomastus erectocentrus

USDA symbol: ECER2

Life cycle: perennial

Habit: shrub

Native status: Native to the lower 48 states  

Synonyms: Echinomastus acunensis W.T. Marshall (ECAC2)  âš˜  Echinocactus erectocentrus J.M. Coult. (ECER4)  âš˜  Echinomastus erectocentrus (J.M. Coult.) Britton & Rose var. acunensis (W.T. Marshall) H. Bravo (ECERA)  âš˜  Neolloydia erectocentra (J.M. Coult.) L.D. Benson (NEER)  âš˜  Neolloydia erectocentra (J.M. Coult.) L.D. Benson var. acunensis (W.T. Marshall) L.D. Benson (NEERA)  âš˜  Sclerocactus erectocentrus (J.M. Coult.) N.P. Taylor (SCER2)   

Redspine Fishhook Cactus: A Rare Desert Gem Worth Protecting Meet the redspine fishhook cactus (Echinomastus erectocentrus), a small but mighty desert dweller that’s as stunning as it is scarce. This little barrel cactus might not win any size contests, but what it lacks in stature, it more than makes up ...

Rare plant alert!

Region: United States

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Redspine Fishhook Cactus: A Rare Desert Gem Worth Protecting

Meet the redspine fishhook cactus (Echinomastus erectocentrus), a small but mighty desert dweller that’s as stunning as it is scarce. This little barrel cactus might not win any size contests, but what it lacks in stature, it more than makes up for in character and conservation importance.

What Makes This Cactus Special?

The redspine fishhook cactus is a true Arizona native, calling the Sonoran Desert home. This perennial succulent gets its common name from its distinctive reddish spines that curve like tiny fishhooks, creating an eye-catching display that’s both beautiful and functional. In spring, if you’re lucky, you might witness its delicate white to pink flowers blooming at the top of the plant—a real treat for any desert garden enthusiast.

Where Does It Grow?

This special cactus is native to Arizona, where it thrives in the harsh but beautiful Sonoran Desert landscape. Its distribution is quite limited, making every specimen precious in both wild and cultivated settings.

A Conservation Concern

Important Note for Gardeners: Before you fall head-over-heels for this charming cactus, there’s something crucial you need to know. The redspine fishhook cactus has a Global Conservation Status of S3 (Vulnerable) and is listed as Endangered in the United States. This means it’s facing real threats in the wild and needs our help to survive.

If you’re considering adding this rare beauty to your collection, please ensure you source it only from reputable nurseries that propagate their plants responsibly—never collect from the wild. Think of yourself as a conservation partner, helping to preserve this species for future generations.

Garden Design and Landscape Use

Despite its small size, the redspine fishhook cactus can play several important roles in your desert landscape:

  • Perfect specimen plant for rock gardens and xeriscapes
  • Excellent addition to cactus and succulent collections
  • Beautiful accent plant that draws the eye without overwhelming smaller spaces
  • Ideal for desert-themed landscapes and drought-tolerant gardens

Pollinator and Wildlife Benefits

Don’t let its spiny exterior fool you—this cactus is a friend to local wildlife. Its spring flowers attract native bees and other desert pollinators, making it a valuable addition to pollinator-friendly gardens. Every bloom helps support the intricate web of desert life.

Growing Conditions and Care

If you’re ready to take on the responsibility of growing this rare cactus, here’s what it needs to thrive:

  • Sunlight: Full sun is essential—this desert native loves bright, direct light
  • Soil: Extremely well-draining soil is non-negotiable; consider a specialized cactus mix
  • Water: Less is definitely more—water sparingly and only when the soil is completely dry
  • Climate: Best suited for USDA hardiness zones 9-11
  • Protection: Shield from frost and freeze damage in cooler climates

Planting and Care Tips

Success with the redspine fishhook cactus comes down to mimicking its natural desert environment:

  • Plant in spring when temperatures are warming up
  • Use gloves and long tongs when handling—those spines mean business!
  • Ensure your container or planting area has excellent drainage
  • Water deeply but infrequently during the growing season
  • Reduce watering to almost nothing during winter months
  • Watch for spring blooms as a sign your care is paying off

The Bottom Line

The redspine fishhook cactus is a living treasure that deserves our respect and protection. While it can make a wonderful addition to the right garden, growing this species comes with the responsibility of supporting conservation efforts. If you choose to grow one, you’re not just adding a beautiful plant to your collection—you’re becoming a steward of a vulnerable species.

Remember: only purchase from reputable sources, never collect from the wild, and consider sharing seeds or offsets with other responsible gardeners to help ensure this remarkable cactus has a secure future.

Redspine Fishhook Cactus

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Caryophyllidae

Order

Caryophyllales

Family

Cactaceae Juss. - Cactus family

Genus

Echinomastus Britton & Rose - fishhook cactus

Species

Echinomastus erectocentrus (J.M. Coult.) Britton & Rose - redspine fishhook cactus

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA