Scientific Name
Crassula 'Ivory Tower'
Scientific Classification
Family: Crassulaceae
Subfamily: Crassuloideae
Genus: Crassula
Description
Crassula 'Ivory Tower' is a slow-growing succulent with opposite, very fleshy, gray-green leaves on upright stems. The well known Crassula 'Moonglow' is a hybrid of Crassula perfoliata var. minor with Crassula deceptor. Crassula 'Ivory Tower' is a back cross of C. 'Moonglow' with C. perfoliata var. minor. It has even thicker leaves than C. 'Moonglow' and forms a striking specimen.
Hardiness
USDA hardiness zones 10a to 11b: from 30 °F (−1.1 °C) to 50 °F (+10 °C).

Photo via succulents-australia-sales.com
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 plant 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.
These succulents are generally started by division, offsets, or leaf cuttings. Crassulas can be easily propagated from a single leaf. Sprout leaves by placing them into a potting mix for succulents, then covering the dish until they sprout.
Repot as needed, preferably during the warm season. To repot your Crassula, 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.
Learn more at How to Grow and Care for Crassula.
Origin
Crassula 'Ivory Tower' is a hybrid, by Myron Kimnach, between Crassula 'Moonglow' and Crassula perfoliata var. minor (formerly known as Crassula falcata).
Links
- Back to genus Crassula
- Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus
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