Spiral aloe

Succulent perennial

Aloe polyphylla

Spiral aloe

Also known as: Aloe polyphila (misspelling), Spiral aloe

A remarkable aloe whose fleshy toothed leaves form a precise clockwise or anticlockwise spiral.

  • Full sun
  • 20–50 cm (8–20 in)
  • 0.5–1 m (2–3 ft)
  • H3 · Zone 8
  • April–June
  • Evergreen

Overview

This high-altitude aloe makes a solitary, geometrical rosette of blue-green leaves and mature plants may produce red and yellow-green flower spikes in spring. Unlike desert aloes, it appreciates cool roots and reliable summer moisture, but demands sharp drainage.

At a Glance

Sun Full sun
Height 20–50 cm (8–20 in)
Spread 0.5–1 m (2–3 ft)
Hardiness H3 · Zone 8
Flowers April–June
Soil Loam, Sand
Moisture Moist well drained
Habit Mound-forming, Rosette-forming
Water Moderate
Maintenance Moderate

Growing Conditions

Min. Temperature -5°C (23°F)
pH Range 5.5–7.5
Fertility Average
Drainage Free Draining

Aspect Suitability

  • South-facing
  • West-facing

Site Tolerance

  • Exposed sites
  • Wind
  • Coastal
  • Drought

Soil Tolerance

  • Sandy
  • Loam
  • Acid
  • Neutral pH
  • Alkaline

Foliage

Persistence Evergreen
Colour Blue-green, Grey-green
Leaf shape / texture Fleshy|Lance-shaped|Spiny
  • Architectural foliage

Foliage interest: 12 months of the year

Seasonal Timeline

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowering
Foliage
Propagate
  • Flowering Apr May Jun
  • Foliage 12 months of the year
  • Propagate Feb Mar Apr

Maintenance Calendar

  • Mar Check the crown and root zone drain freely before spring growth
  • May Provide regular water in active growth without saturating the crown
  • Aug Keep roots cool during hot dry spells
  • Nov Protect potted or young plants from persistent winter wet

Garden Design

Works well in: Coastal, Container, Contemporary, Gravel, Mediterranean, Specimen, Tropical, Tropical / Exotic

Use on a raised slope or in a trough where the spiral is visible from above and the crown sheds winter rain.

Companion planting: Restios, Small grasses, Hardy succulents, Alpine bulbs

Wildlife Value

  • Bees
  • Other pollinators

Safety

  • Toxic to humans
  • Toxic to dogs
  • Toxic to cats
  • Skin irritant

Sap and leaves may be harmful if eaten and leaf teeth are sharp. Buy only legally propagated plants or seed; never collect from the wild.