Echinocactus grusonii albispinus — commonly called the Albispinus White Barrel cactus — is a compact, spherical cactus known for its dense, short white spines that give the plant a pale, silvery appearance compared with the typical white-spined form. It forms solitary to slightly clustering globose stems up to about 30–50 cm (12–20 in) in cultivation. Ribs are well-defined; flowers are funnel-shaped, yellow, and appear at the crown in summer.

Light

Provide bright light to full sun. A south- or west-facing window is ideal. Gradually increase sun exposure to avoid sunburn if moving from lower light.

Temperature & humidity

Optimal: 70–95°F (21–35°C) in growing season. Minimum winter temperature: 50–55°F (10–13°C). Protect from frost. Tolerates low indoor humidity; average home humidity is fine.

Soil & potting

Use a fast-draining cactus or succulent mix. Add extra pumice, perlite, or coarse sand for improved drainage.

Watering

Water thoroughly in spring and summer, then allow soil to dry completely between waterings. Typical interval: every 2–4 weeks depending on conditions.

Fertilizer

Feed lightly during active growth (spring–summer) with a balanced, low-nitrogen cactus fertilizer, diluted to half strength, once a month. Do not fertilize in winter.

Propagation

Generally propagated by seed; pups are uncommon for this species. Sow seeds in well-draining mix, keep warm and lightly moist until germination.