Cape aloe
Aloe ferox · Asphodelaceae
📷 Gregorydavid · CC BY 2.5
The gardener's calendar
In autumn, ease off feeding and take the chance to clean up around cape aloe and prepare for winter.
ID card
- Foliage
- Evergreen
- Flowering
- Winter to spring (December to April)
- Adult size
- 1.5 to 2 m tall × 0.8 to 1 m wide
- Growth
- Slow
- Hardiness
- Freezes from 0°C
- Origin
- South Africa (Eastern Cape)
- Soil type
- Well-draining, mineral, low-fertility
- Exposure
- Full sun
Expert tips
The key tip
Aloe ferox dreads stagnant water far more than drought: water deeply in summer, then let the substrate dry completely between waterings. In winter, stop watering almost entirely. A drilled pot and coarse sand or perlite mixed into the soil are your best allies for this plant.
The common mistake
Most gardeners kill it by watering too regularly or keeping the soil moist: Aloe ferox rots at the roots in just a few weeks if drainage is poor.
The pro's trick
In the height of summer, water at the base only and wait until the soil becomes dusty-dry before the next watering. Check by pushing your finger in: if the soil sticks, wait another week. This trick eliminates 80% of problems.
Seasonal watch
In fall and winter, the major risk is powdery mildew or fungi due to high ambient humidity combined with careless watering. Cut water drastically and ensure good air circulation around the plant to prevent condensation.
Care
Watering
During the growing season (spring-summer), water moderately every 10 to 14 days, allowing the substrate to dry between waterings. In fall-winter, drastically reduce watering or suspend it entirely. Avoid standing water, which causes root rot.
Exposure and light
Place your Cape Aloe in full sun for at least 6 hours daily. This intense exposure strengthens its hardiness and maintains its compact form. Indoors, position it near a very bright window, preferably facing south or west.
Substrate and drainage
Use specialized cactus and succulent potting mix, or prepare your own: 50% potting soil, 50% sand/pumice. Exceptional drainage is essential. Refresh the substrate every 2 to 3 years.
Fertilizing
Apply diluted succulent fertilizer once or twice during the growing period (April to September). Avoid excess nitrogen, which promotes weak growth and weakens the plant.
Pruning and cleaning
No pruning is necessary; the Cape Aloe branches naturally. Remove dead or damaged leaves at the base. Spent flower spikes can be removed for aesthetic purposes.
Diseases and pests
Watch for mealybugs and spider mites indoors. Rot is the main risk: it results from overwatering or poor drainage. Ensure good air circulation and respect the winter dormancy to prevent these issues.
Did you know?
The Cape Aloe long supplied a bitter latex, known as 'aloe juice,' valued in traditional South African phytotherapy. Local populations used this giant aloe not only for its reputed properties but also as a territorial marker and navigation landmark in the arid Cape savanna. Today, the species remains emblematic of South Africa's succulent flora.
Where to buy it
Plant in spring, once all risk of frost has gone. Pick a plant with healthy foliage and roots that are not exposed. Best time: from April to June.
Add this plant to my garden →Plants from the same family
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- New Zealand flaxPhormium tenax
- Tree aloeAloe arborescens
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Tips generated and checked by Viridia — adapt them to your local climate.