Golden Barrel Cactus
Echinocactus grusonii
The golden barrel cactus is a globe-shaped desert cactus ringed with golden-yellow spines. Slow-growing and architectural, it is a popular feature in xeriscapes and pots despite being endangered in the wild.
- Light
- Full sun to very bright light
- Water
- Sparingly; dry out fully between
- Difficulty
- Easy
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Overview
The golden barrel cactus (Echinocactus grusonii) is one of the most recognizable ornamental cacti, forming a near-perfect ribbed globe topped with a crown of woolly hair. Mature plants can reach 2 to 3 feet across.
Its brilliant golden spines, which gave rise to the nickname 'mother-in-law's cushion,' line the prominent ribs and glow when backlit by sun. Despite its popularity, it is critically endangered in its native habitat.
Growth is slow, and plants may take 20 years or more to reach flowering size and produce their ring of small yellow blooms.
How to identify it
- Globe to barrel-shaped body, bright green, becoming more cylindrical with age
- Pronounced vertical ribs lined with areoles
- Dense, stiff, golden-yellow spines, often curved
- A patch of yellowish wool at the crown
- Small yellow flowers form a ring around the top of mature plants in summer
Care & growing
- Light: Full sun outdoors or the brightest indoor window
- Water: Water thoroughly only when soil is fully dry; keep nearly bone-dry in winter
- Soil: Gritty, fast-draining cactus mix
- Temperature: Heat-loving; protect from frost below about 30 F
- Feeding: Light cactus fertilizer once or twice in the growing season
- Propagation: Almost always from seed, as it rarely produces offsets
Habitat & origin
Native to a small area of east-central Mexico, notably around the states of Querétaro and Hidalgo. It grows on volcanic rocky slopes in arid scrubland.
In the wild it is critically endangered, with much of its original habitat lost. Ironically, it is now extremely common in cultivation and widely sold for xeriscaping, rock gardens, and containers worldwide.
Uses & benefits
Almost entirely ornamental, prized as a sculptural focal point in desert landscaping, gravel gardens, and pots. Groupings of barrels make a dramatic display.
It also has conservation value: cultivated populations help preserve a species that is increasingly rare in its natural range.
Frequently asked questions
Why won't my golden barrel flower?
It must be quite mature, often 20 or more years old and at least a foot across, before producing its ring of yellow flowers.
How often should I water it?
Only when the soil has dried out completely, roughly every few weeks in summer, and almost not at all in winter.
Can it survive frost?
It tolerates brief light chills but is damaged by hard freezes. Protect it or bring it indoors below freezing.
Is it endangered?
Yes, it is critically endangered in its native Mexican habitat, even though it is very common in cultivation.
Golden Barrel Cactus guides
In-depth guides for identifying, growing, and caring for Golden Barrel Cactus.
