Sceletium tortuosum Care Guide Sceletium tortuosum (Kanna) is a South African perennial succulent valued for its drought tolerance and compact habit. It prefers bright light, fast-draining soil, and minimal water once established. Light Best: Full sun to strong bright light (6–8+ hours/day). Tolerable: Light afternoon shade in very hot climates. Indoors: Place in a south- or west-facing window or under strong grow light. Soil & Potting Mix: Very well-draining mix — e.g., 50% coarse sand or perlite + 30% potting soil + 20% pumice/grit. pH: Neutral to slightly alkaline (around 6.5–7.5). Potting: Use shallow pots with drainage holes. Repot every 2–3 years or when rootbound. Watering Frequency: Let the top 2–3 cm (0.8–1.2 in) of soil dry between waterings. Water thoroughly, then allow drainage. Dormancy/Cold season: Reduce watering significantly in winter. Overwatering: Susceptible to root rot — avoid waterlogged conditions. Temperature & Humidity Optimal: 18–28°C (64–82°F). Tolerates: Short periods down to ~5–8°C (41–46°F) but avoid freezing. Humidity: Prefers low–moderate humidity; good air circulation is beneficial. Fertilizer When: Grow season (spring–summer). Type: Balanced, diluted liquid fertilizer (e.g., 10-10-10) at 1/4–1/2 strength. Frequency: Every 4–6 weeks during active growth. Do not over-fertilize. Propagation From cuttings: Tip or stem cuttings root readily in coarse, dryish medium; allow cut end to callus 1–2 days, then plant and water sparingly until roots form. From seed: Seeds can be slow and erratic; scarify or soak and sow in well-draining mix; keep warm and lightly moist. Pruning & Maintenance Prune: Light trim to shape and remove dead material. Encourage compact growth by pinching tips. Pests: Watch for mealybugs, scale, and aphids; treat with insecticidal soap or neem oil. Diseases: Root rot from overwatering is the main issue. Flowering Small tubular flowers in clusters; bloom more reliably with strong light and moderate stress (slightly drier conditions). Common Problems & Fixes Yellow, mushy leaves: Overwatering → cut back water, lift plant, repot in fresh, fast-draining soil. Leggy growth: Insufficient light → increase light or move outdoors to sunnier spot. Slow/no flowering: Too much fertilizer or shade → reduce feeding and increase light. Quick Care Summary (indoor default) Light: Bright/south-facing or strong grow light. Soil: Very fast-draining mix. Water: Allow top 2–3 cm to dry; water deeply then drain. Temp: 18–28°C. Feed: Dilute every 4–6 weeks in growing season.
