Plants are subject to rust, but sensitive to fungal sprays. Crassula coccinea can be propagated from seed or cuttings. The seed is best sown during autumn in shallow trays filled with a sandy mixture. Germination is usually very good and within about 3 weeks. The seedlings can be planted out as soon as they are big enough to handle into small containers and grown on.
Cuttings root well in any sandy mixture.
There are about 200 species of Crassula found predominantly in the southern hemisphere and mainly southern Africa.