Cape Aloe (Aloe ferox)

Cape Aloe

Aloe ferox

Thick spiny leaves hold desert resilience, a sculptural succulent with bold blooms. Evergreen succulent shrub; common name: Cape Aloe.

Full sun
0.5–1/week
Beginner
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Plant Needs

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Sunlight Full direct sun for optimal color and growth; tolerates partial shade but may lose compact, vibrant form
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Watering Water deeply only when soil is completely dry; avoid overwatering to prevent root rot
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Temperature Tolerates mild frost down to 5°C; prefers warm, arid conditions; avoid prolonged temperatures below 0°C
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Characteristics

  • Leaf: Thick, fleshy triangular leaves with sharp marginal spines; green to blue-green with reddish tints in full sun
  • Flower: Tall, branched racemes of tubular orange-red flowers
  • Stem: Single, thick woody stem with persistent dried leaf bases
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Care Guide

Watering

Water when soil is fully dry; allow excess water to drain completely

Fertilization

Diluted low-nitrogen feed once every 2 months. Avoid over-fertilizing to prevent leaf burn and weak growth

Eggshell powder topdress:Crush dried eggshells into fine powder; sprinkle lightly on soil surface; avoid direct contact with the main rosette
Pruning
  • Remove dried, dead leaves from the base to maintain rosette shape and improve airflow
  • Trim spent flower stalks after blooming to redirect energy to leaf growth
  • Gently separate offset pups in spring for propagation; avoid damaging the main rosette’s root system
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; contains saponins and anthraquinones causing vomiting, diarrhea, lethargy

Humans: Ingestion causes gastrointestinal upset; sap may cause mild skin irritation

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Garden Uses & Culture

Culture: Symbolizes endurance and traditional healing in South African Indigenous communities

Usage: Medicinal sap for laxative preparations; ornamental succulent for xeriscaping