How to grow cliff cotyledon
Overview
Cliff cotyledon (Cotyledon tomentosa) is a small, clump-forming succulent with fuzzy, scalloped leaves. It is grown for its attractive foliage and occasional bell-shaped flowers, and is ideal for pots, rockeries, or as a gap filler in succulent gardens. Key to success is sharp drainage and protection from excessive summer rain.
Varieties
- Cotyledon tomentosa 'Bear's Paw' — The standard form with fuzzy, scalloped leaves that resemble bear paws; most common in AU/NZ.
- Cotyledon tomentosa 'Variegata' — A variegated form with cream and green leaf margins, slightly slower growing but highly collectable.
Soil Preparation
Needs a very well-draining, gritty soil mix with pH 6.0–7.0. Add coarse sand, perlite, or pumice to standard potting mix. Avoid heavy clay or water-retentive soils; if planting in ground, amend with gravel to improve drainage.
Growing Guide
Position in part shade with morning sun and afternoon relief. Use a free-draining succulent mix or add coarse sand and pumice to standard potting soil. Space plants 15–20 cm apart in a pot or 20–30 cm in the ground. Water only when the soil is dry to the touch, and reduce watering in winter. Protect from heavy rain by moving pots under cover or planting on a slope.
Care
Feed with a diluted liquid succulent fertiliser (half strength) once in spring and once in early summer. Prune leggy stems back to the base to maintain a compact shape. Remove spent flower stalks to encourage fresh growth and prevent energy loss.
Companion Planting
Pair with other small succulents like Echeveria, Sedum, and Crassula. Avoid planting near moisture-loving plants such as ferns or impatiens, which can cause root rot. Good in a mixed succulent bowl with Haworthia and Aloe.
Common Pests & Risks
Mealybugs appear as white cottony masses on leaf axils; treat with isopropyl alcohol or neem oil. Root rot occurs from overwatering or poor drainage; ensure soil dries completely between waterings. Scale insects can be controlled with horticultural oil.
Troubleshooting
Yellow leaves: usually from overwatering or poor drainage; let soil dry out and check pot holes. Brown leaf edges: caused by sunburn or salt buildup; move to part shade and flush soil with water. Leggy growth: insufficient light; move to brighter spot and prune back. Leaf drop: overwatering or cold damage; reduce water and protect from frost. Mealybugs: treat with alcohol spray as soon as seen.