Accepted Scientific Name
Giant Watch Chain
Crassula × imperialis
Crassula 'Imperialis' is a succulent with tight, erect to decumbent, densely branched stems. It appears to be a thicker form of the very variable Crassula muscosa. Leaves are small, light green to grey- or brownish-green, densely packed around the stem, forming a square mass similar to C. muscosa but thicker. It grows up to 8 inches (20 cm) tall. Flowers are small, yellow-green, and appear in summer and fall.
USDA hardiness zones 9a to 10b: from 20 °F (−6.7 °C) to 40 °F (+4.4 °C).
How to Grow and Care
Crassulas are easy to grow, but they are susceptible to mealybugs 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, 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.
It is thought by some to be a hybrid, but this succulent is probably just a thicker form of Crassula muscosa.
- Back to genus Crassula
- Succulentopedia: Browse succulents by Scientific Name, Common Name, Genus, Family, USDA Hardiness Zone, Origin, or cacti by Genus