Golden Barrel Cactus (Echinocactus grusonii): Desert Globe of Gold

Overview

The Golden Barrel Cactus (Echinocactus grusonii) is one of the most recognizable and beloved cacti. Its perfectly spherical to barrel-shaped body is ribbed and densely covered in golden-yellow spines that glow in sunlight. Slow-growing, it can reach 3 feet tall and wide over decades. In summer, a ring of bright yellow flowers crowns mature plants (usually 20+ years old). Native to a small region in central Mexico, it's endangered in the wild but widely cultivated. A stunning specimen for rock gardens, containers, and mass plantings.

Key Features

• Form: Solitary, globular to barrel; 20–30+ ribs.
• Spines: Dense, golden-yellow, stout; curved or hooked centrals.
• Flowers: Yellow, 2 in, in a crown at apex; summer on mature plants.
• Status: Endangered in wild; widely propagated.

Care Guidelines

Light

Full sun. Essential for spine color and compact growth.

Water

Low. Water deeply but infrequently in growing season; keep dry in winter.

Soil

Very well-drained, gritty mineral soil. No organic matter.

Hardiness

USDA zones 9–11. Protect from hard frost.

Taxonomy

Family:	Cactaceae
Genus:	Echinocactus (ek-in-oh-KAK-tus)
Species:	grusonii (groo-SON-ee-eye)