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Mojave Mound Cactus

Echinocereus polyacanthus

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Mojave Mound Cactus (Echinocereus polyacanthus) at Roger's Gardens

Mojave Mound Cactus flowers

Mojave Mound Cactus flowers

(Photo courtesy of NetPS Plant Finder)

Height:  14 inches

Spread:  3 inches

Sunlight:  full sun 

Hardiness Zone:  9b

Other Names:  Giant Claret-Cup Cactus; Salmon Flowered Hedgehog


This cactus is widely cultivated for its beautiful flowers; rot prone in winter, needs good drainage; blooming begins 5 to 10 years after sowing, as the plant matures; a wonderful addition to the rock garden

Ornamental Features

Mojave Mound Cactus features solitary red cup-shaped flowers with orange overtones and creamy white eyes along the stems in late spring. Its attractive spiny round leaves remain light green in color throughout the year. The fruit is not ornamentally significant.

Landscape Attributes

Mojave Mound Cactus is an herbaceous evergreen perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and should never be pruned except to remove any dieback, as it tends not to take pruning well. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Spiny

Mojave Mound Cactus is recommended for the following landscape applications;

  • Accent
  • Rock/Alpine Gardens
  • General Garden Use

Planting & Growing

Mojave Mound Cactus will grow to be about 12 inches tall at maturity, with a spread of 3 inches. Its foliage tends to remain dense right to the ground, not requiring facer plants in front. It grows at a slow rate, and under ideal conditions can be expected to live for 60 years or more.

This plant should only be grown in full sunlight. It prefers dry to average moisture levels with very well-drained soil, and will often die in standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is not particular as to soil pH, but grows best in sandy soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is native to parts of North America. It can be propagated by division.

Hardiness Zone Plant Height Minimum Sunlight
Accent  Rock  Garden 
Flowers  Foliage Color  Plant Form 
Ornamental Features