Giant barrel cactus (Echinocactus platyacanthus)

Giant barrel cactus

Giant barrel cactus is a robust barrel cactus, often recognized for its large, cylindrical form, reaching up to a meter in height. Its surface is adorned with prominent ribs lined with clusters of long, sharp spines that offer protection and minimize water loss. The hearty structure supports survival in arid desert conditions, where it stands like a sentry, conserving moisture and withstanding the intense sun.

Scientific classification

Species

Giant barrel cactus (Echinocactus platyacanthus)

Pinks, cacti, and allies

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Perennial

Lifespan

Succulent

Plant Type

1.5 to 2 m

Plant Height

20 - 38 ℃

Ideal Temperature

Images of Giant barrel cactus

Care Guide for Giant barrel cactus

Once per month

Water

Full sun

Sunlight

20 - 38 ℃

Ideal Temperature

Water: Giant barrel cactus is drought-tolerant, needing water only when the soil is completely dry. In spring through fall, water weekly to keep soil slightly moist, reducing to weekly in winter. Use rainwater or distilled water to prevent soil compaction; avoid water on the stem to prevent rot.

Fertilize: During growing seasons (spring, summer, fall), fertilize giant barrel cactus monthly with liquid fertilizer; winter requires none. Use slow-release fertilizer when repotting. Apply nitrogen during seedling stage and phosphate-potassium before/after blooming, with low concentrations preferred to prevent yellowing and slow growth.

Pruning: Giant barrel cactus has a unique spherical shape and ribbed surface. Prune in early spring by removing damaged segments at the base for healthy growth. Use sterilized tools to avoid infections and wear gloves for protection. Regular pruning enhances aesthetics and health while improving sunlight exposure and air circulation.

Propagation: Propagation of giant barrel cactus includes seeding, division, and grafting. For division, cut and replant a stem tip to encourage shoot growth. Grafting involves selecting a rootstock, cutting its tip, placing giant barrel cactus at the center, and securing it until they bond after 1-2 weeks.

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