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Crassula 'Tom Thumb'


Scientific Name

Crassula 'Tom Thumb'

Common Names

Tom Thumb


Crassula 'Klein Duimpje'

Scientific Classification

Family: Crassulaceae
Subfamily: Crassuloideae 
Genus: Crassula


Crassula 'Tom Thumb' is a charming miniature succulent with tiny, triangular leaves in opposing ranks on stems that grow up to 6 inches (15 cm) tall. It is similar to Crassula perforata. The mint green leaves are up to 0.2 inches (5 mm) long and have colorful reddish edges, especially in bright light. It is topped by clusters of tiny white flowers in spring. There is also a variegated mutant called Crassula 'Pastel'.

Crassula 'Tom Thumb'

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USDA hardiness zone 9b to 11b: from 25 °F (−3.9 °C) to 50 °F (+10 °C).

How to Grow and Care

Crassulas are easy to grow, but they are susceptible to mealy bugs and fungal diseases. As with all succulents, overwatering is sure to be fatal, so err on the side of too dry rather than too wet. Never let your Crassula sit in water. If you water from beneath by letting the plant sit in a saucer of water, make sure to pour off any excess water after a few minutes.

Crassulas are generally started by division, offsets, or leaf cuttings. Plants can be easily propagated from a single leaf: sprout leaves by placing them into a succulent or cacti mix, then covering the dish until they sprout.

Repot as needed, preferably during the warm season. To repot a succulent, make sure the soil is dry before repotting, then gently remove the pot. Knock away the old soil from the roots, making sure to remove any rotted or dead roots in the process. Treat any cuts with a fungicide. Place the plant in its new pot and backfill with potting soil, spreading the roots out as you repot. Leave the plant dry for a week or so, then begin to water lightly to reduce the risk of root rot. See more at How to Grow and Care for Crassula.


It is a hybrid by Hermann Jacobsen, between Crassula rupestris subsp. rupestris and Crassula rupestris subsp. marnieriana.


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