Light
Cotyledons require a sunny position with as much light as possible.
Water
extremely drought tolerant, water when soil is dry to the touch
Fertiliser
Feed it once or twice during the growing season with a fertilizer specifically formulated for cactus and succulents (poor in nitrogen).
Soil
very fast draining, ideally containing sand, potting mix suitable for cacti and succulents
Humidity
low
Temperature
This plant is hardy down to -4 degrees Celsius.
Repotting
Repot in Spring only when roots become cramped. Do not water for a week or more after repotting. Needs a large pot to accommodate a large root system.
Toxicity
Toxic to humans and animals when ingested.