Kalanchoe humilis, often recognized by common names such as Desert Cabbage or Desert Surprise, is a striking succulent hailing from Madagascar. This plant features distinctive pale green leaves mottled with reddish-brown or purple spots, arranged in upright rosettes. Its unique appearance, combined with its undemanding nature, makes it a favored choice for both novice and seasoned plant enthusiasts.
Essential Growing Conditions
Light
Kalanchoe humilis thrives in bright, indirect light. Placing it near a south-facing window indoors provides ample illumination. While it tolerates some direct morning sun, intense afternoon sun can lead to leaf scorching. Insufficient light causes the plant to stretch and become leggy, a condition known as etiolation.
Watering
Use the “soak and dry” method for watering Kalanchoe humilis. Thoroughly water the plant until water drains from the pot’s bottom, then allow the soil to completely dry out before the next watering. Overwatering can quickly lead to root rot. During cooler months or dormancy, reduce watering frequency.
Soil
A well-draining soil mix prevents waterlogging for Kalanchoe humilis. A specialized succulent or cactus potting mix is ideal. Regular potting soil can be amended with perlite, pumice, or coarse sand to enhance drainage. Ensure the pot has adequate drainage holes.
Temperature and Humidity
Kalanchoe humilis prefers average room temperatures, above 55°F (13°C). While it tolerates minor temperature fluctuations, it is sensitive to frost. This succulent prefers low to moderate humidity and does not require misting, which can lead to fungal issues.
Feeding and Ongoing Care
Fertilizing
Kalanchoe humilis benefits from occasional fertilization during its active growing season (spring and summer). Apply a balanced succulent-specific liquid fertilizer, diluted to half strength, approximately once a month. Avoid over-fertilizing, as it can cause nutrient burn. Withhold fertilization during dormant winter months.
Pruning
Prune Kalanchoe humilis to maintain its shape, remove leggy growth, and encourage a bushier appearance. Although flowering is rare indoors, deadhead spent flower stalks to redirect energy towards foliage development. Pruning can be performed throughout the year, with the growing season optimal for new growth.
Repotting
Repot Kalanchoe humilis every two to three years, or when it becomes root-bound (roots circling the pot or emerging from drainage holes). Select a container only slightly larger than the previous one, ensuring good drainage. Carefully transfer the plant using fresh, well-draining succulent or cactus soil mix, minimizing root disturbance. Spring is the best time for repotting.
Propagation
Kalanchoe humilis can be propagated from both leaf and stem cuttings. For leaf cuttings, gently twist a healthy leaf from the main plant, ensuring the entire leaf base is intact. For stem cuttings, use a sharp, sterile knife or scissors to cut a section of stem, just above a leaf node.
After taking cuttings, allow the cut end to “callus over” for a few days to a week in a dry, airy location to prevent rot. Once callused, plant the cutting in a pot filled with well-draining succulent soil. Water sparingly until roots begin to form, which typically takes a few weeks. Propagation is most successful during spring and early summer.
Troubleshooting Common Problems
Etiolation, characterized by stretched, pale stems and widely spaced leaves, signals insufficient light exposure. Moving the plant to a brighter location will correct this, though existing stretched growth will not revert.
Watering issues are common. Overwatering can lead to mushy, yellowing leaves and root rot, causing the plant to wilt even when the soil is wet. Conversely, underwatering results in shriveling leaves as the plant draws moisture from its foliage. Adjusting watering frequency based on soil dryness is important. While Kalanchoe humilis is relatively pest-resistant, occasional infestations of mealybugs or aphids can occur. Treat these with a strong stream of water, insecticidal soap, or diluted neem oil.