Simpson's pincushion cactus (Pediocactus simpsonii)

Simpson's pincushion cactus

Also known as: Mountain ball cactus, Mountain cactus

Simpson's pincushion cactus (Pediocactus simpsonii) is an incredibly hardy cactus that can thrive in some of the roughest areas of the upper reaches of the Rocky Mountain in the western United States. The perfectly round barrel creates a spiny backdrop for almost florescent pink flowers. It's not incredibly common, so finding one in the wild is a real treat!

Scientific classification

Species

Simpson's pincushion cactus (Pediocactus simpsonii)

Pinks, cacti, and allies

Instantly identify plants with a snap

Snap a photo for instant plant ID, gaining quick insights on disease prevention, treatment, toxicity, care, uses, and symbolism, etc.

Download the App for Free

Perennial

Lifespan

Shrub

Plant Type

18 cm

Spread

White, Pink, Purple

Flower Color

Deciduous

Leaf type

20 - 41 ℃

Ideal Temperature

Images of Simpson's pincushion cactus

Care Guide for Simpson's pincushion cactus

Every 3 weeks

Water

Full sun

Sunlight

20 - 41 ℃

Ideal Temperature

Succulent & Cactus Soil

Soil Type

Water: Simpson's pincushion cactus is highly drought-tolerant, requiring minimal watering—approximately once every three weeks. Preferring natural light, it thrives outdoors and adapts well to seasonal rainfall, entering dormancy during extended dry periods.

Fertilize: Fertilize simpson's pincushion cactus with diluted succulent-specific fertilizer every 4 weeks during the growing season (spring to early fall) to encourage health and blooms. Avoid over-fertilization and cease in winter during dormancy. Gradually introduce fertilizer to young simpson's pincushion cactus to prevent burn.

Pruning: Simpson's pincushion cactus needs minimal pruning. Focus on removing withered flowers and branches to allow the plant to allocate nutrients towards robust, healthy growth.

Propagation: Simpson's pincushion cactus is propagated effectively through cuttings. Allow the cut surface to callous before planting in well-draining cactus mix. Provide indirect light and minimal water until roots form. Ideal for amateur gardeners, simpson's pincushion cactus establishes easily, expanding arid plant collections simply.

Repotting: Repot simpson's pincushion cactus every 2-3 years in spring, selecting a container slightly larger than its base to avoid waterlogging. Ensure good drainage for the root system. After repotting, position simpson's pincushion cactus in bright, indirect light and resume watering a week later to allow roots to settle.

Get tips and tricks for your plants.

Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.

Download the App for Free