How to grow cineraria
Overview
Cineraria (Pericallis cruenta) is a cool-season herbaceous plant grown for its vibrant daisy-like flowers and lush foliage. It thrives in part shade and is ideal for filling gaps in beds or containers, providing seasonal colour during the cooler months.
Varieties
- Jester — A compact variety with mixed colours, ideal for pots and borders.
- Senetti — Large-flowered series with blue, pink, and magenta blooms, very popular in Australian nurseries.
Soil Preparation
Cineraria prefers rich, well-draining soil with a pH of 6.0–7.0. Amend with compost or aged manure before planting to improve moisture retention and fertility. Ensure good drainage to avoid root rot in heavy soils.
Growing Guide
Plant cineraria in part shade, avoiding harsh afternoon sun to prevent leaf scorch. Use well-draining soil enriched with organic matter, and space plants 20–30 cm apart. Keep soil consistently moist but not waterlogged; water at the base to avoid fungal issues. In cooler zones, protect from frost with a cloche or grow in a sheltered spot. In subtropical areas, plant in autumn for best results as plants bolt in heat.
Sowing
Sow seeds on the surface of fine seed mix, barely covering with vermiculite. Germination takes 10–14 days at 18–21°C. Transplant seedlings when 4–6 cm tall, spacing 20–30 cm apart. Direct sowing is possible in mild climates.
Care
Feed with a balanced liquid fertiliser every 2–3 weeks during active growth. Deadhead spent flowers regularly to extend blooming and prevent premature seeding. Cut back leggy stems after the main flush to encourage compact, bushy growth.
Companion Planting
Pair cineraria with primulas and cyclamen for a cool-season display. Avoid planting near heat-loving crops like tomatoes or basil, which compete for different conditions. Good companions include lobelia, pansies, and ferns for shaded beds.
Common Pests & Risks
Aphids cluster on new growth and flower buds; control with a strong water spray or insecticidal soap. Leaf miner creates winding trails in leaves; remove affected foliage and use neem oil. Monitor for slugs in damp conditions, especially on young plants.
Troubleshooting
Yellow leaves: overwatering or poor drainage; reduce water and improve soil. Brown leaf edges: low humidity or sun scorch; move to more shade or mist. Leggy growth: too little light or not pinched back; increase light and prune. Powdery mildew: poor air circulation; space plants and avoid overhead watering. Stunted growth: cold damage; wait for warmth or protect from frost.