Crassula sarmentosa 'Comet' is a scrambling succulent that grows up to 30 cm tall and branches sparingly from the base with long reddish stems that arches or trails down. Crassula is easy to grow but susceptible to mealy bugs and fungal diseases.
Crassula sarmentosa forms a neat, rounded, sub-shrub with slightly toothed succulent leaves. While the leaves are dark green if grown in shade, the plant becomes highly ornamental in dry, sunny conditions, the leaves turning to an almost neon green blending to pink and yellow, with dark red margins. They make an extremely decorative ground cover or feature plant. In their natural habitat they are able to withstand drought although they are unlikely to look their best after long periods without moisture. They produce large masses flowers and can tolerate year-round or summer rainfall conditions.