Crassula pellucida aka Calico Kitten Plant

Crassula pellucida thrives in temperatures between 50-75°F (10-24°C) and can tolerate brief cold down to 30°F (-1°C). However, it is not frost-hardy and should be protected from freezing temperatures. In USDA zones 9-11, it can grow outdoors year-round, but in colder regions, bring it indoors during winter. RHS rates it as H2 hardiness, meaning it needs a frost-free environment with minimum temperatures of 1-5°C.

Crassula pellucida is a low-growing succulent groundcover that typically reaches about 10cm (4 inches) in height. Its trailing stems can spread up to 60cm (24 inches) long, making it excellent for hanging baskets or as a 'spiller' in container arrangements. The plant forms a cushion-like mat of heart-shaped leaves when given space to spread. Growth rate is moderate for a succulent.

Yes, Crassula pellucida produces tiny star-shaped white or pale pink flowers that are 3-5mm long. Flowering occurs in late spring to summer, though it may bloom sporadically at other times. To encourage blooming, provide adequate light and a cool, dry wintering period at 35-44°F (1.5-7°C). The flowers appear in clusters held slightly above or partially hidden by the foliage.

Crassula pellucida has four recognized subspecies: subsp. pellucida (the type), subsp. marginalis (eastern trailing crassula, with fused leaf bases), subsp. brachypetala (short-petalled trailing crassula, with hairy stems), and subsp. spongiosa (rare, from Northern Cape). The most popular cultivated form is 'Variegata' (Calico Kitten), a variegated form of subsp. marginalis with cream, green, and pink-tinged leaves that intensify in bright light or when dry.

Crassula pellucida can grow outdoors year-round in USDA zones 9-11. It thrives in semi-shaded rockeries, retaining walls, and container gardens. In its native South Africa, it grows in shaded, rocky, forested areas. In colder climates, grow it in containers that can be brought indoors before frost. Outdoors, it makes an excellent groundcover but needs protection from harsh afternoon sun which can scorch the leaves.

Crassula pellucida requires minimal pruning. RHS notes that no regular pruning is needed. You may trim leggy stems to maintain a compact shape, and any pruned stem cuttings can be used for propagation. Remove any dead or damaged leaves to keep the plant looking tidy and prevent disease. The trailing stems can be cut back if the plant becomes too sprawling for its container.

Repot Crassula pellucida during the warm growing season when it outgrows its container or becomes root-bound. Before repotting, ensure the soil is completely dry. Gently remove the plant, shake off old soil, and inspect roots for any rot (remove any soft or dead roots). Let the plant dry for about a week before potting in fresh, well-draining succulent mix. Water lightly after potting to reduce the risk of root rot.

Crassula pellucida propagates easily via stem cuttings, leaf cuttings, or division. Stem cuttings are the fastest method: cut a healthy stem with several leaves, let it dry for 1-2 days until calloused, then plant in well-draining soil. Roots appear within 2 weeks, with full rooting in 4-6 weeks. For leaf propagation, place leaves on moist succulent mix until they sprout new plantlets (this takes weeks to months). Stems also root naturally where they touch soil.

Yellow leaves on Crassula pellucida typically indicate overwatering, which can lead to root rot. Check that soil is drying completely between waterings and that your pot has drainage holes. Other causes include nutrient deficiency (apply diluted fertilizer during growing season) or insufficient light. If leaves are yellow and mushy, reduce watering immediately and consider repotting in fresh, dry soil after trimming any rotted roots.

Brown leaves on Crassula pellucida are typically caused by sunburn from too much direct sunlight. Move the plant to a location with bright, indirect light or provide afternoon shade. If transitioning the plant outdoors, acclimate it gradually to prevent sun damage. Brown, crispy leaf tips can also indicate underwatering—while this succulent is drought-tolerant, extremely dry conditions can cause leaf tip browning.

Drooping in Crassula pellucida usually indicates either overwatering or underwatering. If leaves are mushy and translucent, overwatering is the cause—let the soil dry completely and check for root rot. If leaves are shriveled and wrinkled, the plant needs water—give it a thorough soak. The trailing stems naturally arc downward as they grow longer, which is normal behavior rather than a problem.

The most common pests on Crassula pellucida are mealybugs, aphids, and spider mites. Mealybugs appear as white cottony masses on stems and leaf undersides—remove them with a cotton swab dipped in rubbing alcohol. RHS notes the plant is otherwise generally disease-free. Prevent fungal issues by ensuring good air circulation and avoiding wet leaves. PlantZAfrica recommends growing in areas with 'free air circulation and low humidity' to prevent mealybug and fungal diseases.