Adromischus cristatus

RHS Plant Profile
key lime pie
Award of Garden Merit
Cactus Succulent

A fun and easy-to-grow, clump-forming evergreen perennial succulent to around 30cm in height, forming rosettes of triangle-shaped, dark green fleshy foliage with crinkled ends, covered in small, silvery-white hairs. Star-shaped white flowers, flushed with pink, emerge from tall, green stalks in spring and summer. A great choice for children or budding new growers to try

Position

Full sun

Soil Types

Loam, Sand

Size

Time to Maturity
2–5 years

Growing Conditions

Loam Sand
Moisture
Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness
H2
Drought Resistance
Yes

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Crassulaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Clump forming
Genus
Adromischus are a genus of easily-propagated leaf succulents native to South Africa. Stems are thick and flowers bright green.
Name Status
Correct

How to Grow

Cultivation

Grow under glass in a sharply draining or proprietary cactus compost in full sunlight with good ventilation. Water during the growing season in spring to autumn, only when the soil has become dry. Withhold water altogether in the winter months and keep cool, but not lower than 7°C (45°F). A low nitrogen fertiliser can be applied two or three times during the growing season. See houseplant cacti and succulent cultivation for more detailed advice

Propagation

Propagate by seed sown at 19-24°C (66-75°F) in spring, or by stem or leaf cuttings in summer

Suggested planting locations and garden types

  • Houseplants
  • Patio and container plants
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to mealybugs and greenfly

Diseases

Generally disease-free but may be susceptible to root rots in wet soil