Didymaotus lapidiformis is not a plant that will do well in the garden. Rather grow this chunky succulent in a clay pot and keep it in a sunny position. The plant can be displayed in a sunny courtyard. Sow seeds from April to May. Where possible use fresh seeds; they are very fine and thus should not be sown too deep. Use flat plastic or wooden planting trays in a well-drained medium. The following mixture is recommended: 4 parts fine river sand, 2 parts coarse river sand, 1 part sieved, well-rotted compost, 1 part vermiculite and 1 part perlite.

Ensure that there is adequate drainage in the bottom of the flat seed pan and that the soil is thoroughly mixed. Use coarse sand on the top of the generic mix. It is in this coarse sand that the seeds must be sown. Cover with fine sand (0.5 mm) and water in with a fine mist spray. Keep the planting tray in a sunny position.

The seeds will germinate fairly rapidly; however, it could take up to two years before the plants are large enough to be transplanted into smaller containers. When planted out, they must be located in a well-ventilated site with good morning sunshine. Keep moist only in the winter and during summer they should be kept dry (winter rainfall area). In the summer rainfall areas give water only once a month and keep dry during the cold winters.

After a brief hardening off period (three months) place them in full sun. It is best to plant this species in clay containers as the pots tend to "breathe" better than the plastic ones. Generally some succulent plants live far longer in clay pots as opposed to those in plastic pots.

Pests Pests that attack Didymaotus lapidiformis are red spider mite and caterpillars (moth larvae). Red spider mite can easily be treated by using a solution of 20 ml oleum in one litre of water or 16 ml diazinon in 10 litres of water. Worms (moth larvae) are easily controlled by using 10 g Bathyroid wettable powder to 10 litres of water.

It is not necessary to use inorganic fertilizers. Rather use organic fertilizers such as Kelpak (sea weed extract). Feed only once a year with 10 ml Kelpak to one litre of water during the winter months in winter rainfall areas, and in the summer rainfall areas in March.