Crassula ericoides is easy to grow and is easy to root and propagate. Use well-drained, sandy soil, or a free-draining succulent mix, with an ideal pH around 6.0 (slightly acidic). It requires full sun, does well in filtered sun, and can handle some shade too, but tends to become lank and floppy in shade. It can be sunburned if moved from shade into full sun too quickly.

In the garden, plant it in a sunny position, in well-drained soil. It can also be grown indoors throughout the year, where it requires heat and bright light with good air circulation, and will not do well in still, humid air. This plant species is drought tolerant and needs only light watering. Water regularly in the growing season, but avoid water-logging and let the soil dry out between waterings. Water with caution in winter, as the plant can lose its roots if the soil stays cold and wet for extended periods. It is a rapid grower. Protect from frost to prevent any sort of damage, and when grown indoors keep at a minimum winter temperature of 10°C. In cold climates plant this in a container, so it can be moved into a protected area during cold periods.

To make new plants, take stem cuttings or detach leaves, by pulling or bending them away from the stem and allow them to dry for a day or two. Then simply place the cut stems or detached leaves in well-drained, gritty soil or in a mix such as one part slightly moist peat and two parts sharp sand, keep moist and place in a bright situation but out of direct sun, and within a week or two you will have a new plant. The rooted cuttings and leaves can be repotted. You can also propagate Crassula ericoides from seed but it is easily increased through cuttings because they root very easily.