🪴 Ideal for tiny pots, office gifts & (open) terrariums.
Great for
🧩 Mini mixes with other succulents.
📐 Shelves/desks for clean, small accents.
🏠 A sunny windowsill (AM/PM sun).
Placement
Very bright spot with 1–4 hours of direct sun (morning is ideal) for compact form/colour. Water deeply, then let the mix dry completely. Use an ultra-draining substrate (cactus mix with pumice/sand). Pot with drainage holes; no standing water. Best at >10–12 °C.
Nice companions
Haworthia / Gasteria → texture contrast in tiny pots.
Echeveria / Graptopetalum → pink/silvery rosettes beside the Crassula “column”.
Taxonomy: Genus Crassula (>200 spp.) includes emblematic South-African succulents. ‘Tom Thumb’ is considered a dwarf clone within the Crassula rupestris complex (stacked, triangular leaves forming a columnar habit).
Range & habitat: Southern Africa; dry rocky sites with extreme drainage and seasonal rains. Adapted to full sun with cool nights.
Name: “Crassula” from Lat. crassus (=thick), for the water-storing leaves. ‘Tom Thumb’ = miniature size.
Ecology & physiology: CAM metabolism — stomata open at night to save water. Red/pink margins in strong light/coolth.
Relatives & distinction: Finer scale than Crassula perforata or C. rupestris sensu lato — smaller, denser leaves; more delicate texture.
Propagation & stability: Easy from stem/leaf cuttings; roots fast in a dry, gritty medium. Clonal lines hold traits true.
