Golden Barrel Cactus

The Golden Barrel cactus (Echinocactus grusonii) is a striking, globe-shaped cactus native to central Mexico. Here’s a detailed look at it:

Appearance

• Shape: When young, it forms a nearly perfect sphere, gradually becoming slightly elongated with age. Mature plants can reach up to 3 feet (about 1 meter) in height and diameter.

• Ribs: It has 20–30 distinct vertical ribs running along its surface.

• Spines: Each rib is lined with clusters of stout, golden-yellow spines that radiate outward. These spines are sharp and rigid, providing protection from herbivores and intense sunlight.

• Color: The body is typically bright green, which contrasts beautifully with its golden spines.

Flowers

• Blooming season: Usually in summer.

• Color: Bright yellow flowers appear at the plant’s crown.

• Size: Flowers are relatively small (about 2 inches in diameter) compared to the cactus’s body.

• Note: Golden Barrel cacti need to be mature (often 15+ years old) before they start flowering.

Habitat & Growing Conditions

• Native range: Slopes of volcanic rock in central Mexico.

• Sunlight: Full sun is ideal, though it can tolerate partial shade.

• Soil: Well-draining, sandy or gritty soil to prevent root rot.

• Watering: Very drought-tolerant. Requires infrequent watering—allowing soil to dry completely between waterings.

• Temperature: Prefers warm climates but can survive brief dips near freezing if kept dry.