Crassula deceptor can be easily propagated by stem cuttings, division of offsets, leaf cuttings and seeds.

When propagating through stem cuttings, make a cutting that is 5 to 7 cm long, plant it in a medium made up of sand and peat moss in equal measures and keep the plant at room temperature in bright light. When using leaves to propagate Crassula deceptor, it is advisable to get a healthy, entire leaf from the mother plant and replant it in well-draining soil. When replanting offsets, remove them from the mother stock plant using a sharp knife, make certain to clean off excess soil and wait until the offset is callused (hardened over the wound) and then replant it in well-draining soil.

Using seeds to propagate Crassula deceptor is not a common method because their growth rate is exceptionally minimal. Nevertheless, if one chooses to propagate Crassula deceptor using this method, seeds should be sown in autumn, in a mixture that is well-draining, and because the seeds are very tiny, mix them with fine sand and broadcast that mixture evenly over the surface of the soil.

When growing Crassula deceptor a porous and well-drained medium is preferable.

Crassula deceptor is more of an outdoor plant than an indoor one and is best grown in a full sun or a partial shade exposure. However, maximum sunlight will promote the establishment of more fully developed leaves, which boost the plant’s potential attractiveness. So, it is better to position it in a bright spot but keep it away from direct exposure during the hottest hours of summer days. Occasionally, it can be grown in shade, but plants that are grown in constant full shade tend to become more weak, lose leaves, produce no flowers, and turn a paler colour.

The best way to water Crassula deceptor is by allowing the soil to become fully dry and then give it a good soaking. Crassula deceptor is a succulent and has the same watering needs as other types of succulents. It should be watered properly for it to grow well and be healthy. Nonetheless, one should take care not to overwater the plant and it must not sit in water. Water your Crassula deceptor every 2-3 days in spring and summer during the growing season. In autumn and winter, watering can be reduced or entirely stopped.

There is a very minimal need to fertilize Crassula deceptor, because fertilization can result in abundant leafy growth that can spoil the sleek, refined look of the plant that you want. Fertilization can be done once in the growing season by use of any product specific for succulents.

Crassulas are easy to grow but vulnerable to mealy bugs and fungal diseases. As with all succulents, overwatering is sure to be destructive. So, the plant would rather be dry than be too wet. Succulents should not be allowed to sit in water. If you water from beneath by letting the plant sit in a saucer of water, make sure to remove any surplus water after a few minutes.

This succulent thrives in warm climates and the perfect temperatures are said to be between 15.5°C to 24°C. In winter the temperatures should not be less than 10°C. The succulent does not do very well in cold and damp weather, and tends to lose its colour, turning mushy and yellow. If you live in an area with a cold climate, it is better to grow the succulent indoors. However, you must ensure that it receives sufficient sunlight.