How to grow quince
Overview
Quince (Cydonia oblonga) is a deciduous tree grown for its fragrant, golden fruit and ornamental spring blossom. It is a traditional orchard fruit that requires a cold winter to set fruit, making it best suited to cooler climates.
Varieties
- Smyrna — Large, golden fruit with excellent flavour; popular in cool climates.
- Champion — Vigorous, heavy-bearing variety with smooth, pale yellow fruit; good for temperate zones.
- Van Deman — Sweet, aromatic fruit with a red blush; suited to warmer temperate areas.
Soil Preparation
Quince prefers slightly acidic to neutral soil (pH 6.0–7.0). Amend heavy clay with gypsum and organic matter; improve sandy soil with compost. Ensure good drainage to prevent root rot.
Growing Guide
Plant quince in a sunny, sheltered position with well-drained, loamy soil. Space trees 4–5 m apart. Dig a hole twice the width of the root ball and incorporate compost. Water deeply after planting and stake for the first year. Mulch with straw or wood chips to retain moisture and suppress weeds.
Sowing
Sow quince seeds 1–2 cm deep in seed trays in autumn; germination takes 4–8 weeks at 15–20°C. Transplant seedlings after 1–2 years. Most home growers buy grafted trees for earlier fruiting.
Care
Feed quince with a balanced fertiliser (e.g., 10-10-10) in early spring and again after harvest. Prune in winter to remove dead wood and open the canopy. Thin fruit in summer to 10–15 cm apart for larger, better-quality fruit.
Companion Planting
Plant comfrey, borage, or nasturtiums near quince to attract pollinators and deter pests. Avoid planting near juniper or other cedars, which host rust fungus that can affect quince.
Common Pests & Risks
Codling moth is the main pest; use pheromone traps or spray with spinosad in spring. Fire blight can occur in wet conditions; prune out infected branches and avoid overhead watering. Quince rust causes leaf spots; remove fallen leaves and apply copper spray in autumn.
Harvesting
Harvest quince when the fruit turns fully yellow and releases a strong, sweet fragrance, usually from late autumn. The fruit is hard and astringent at harvest and needs to be stored for a few weeks to soften before use.
In the Kitchen
Quince is too hard and astringent to eat raw. Use for jams, jellies, and poached desserts. Store in a cool, dark place for 2–4 weeks to soften. The high pectin content makes it ideal for preserves.
Troubleshooting
Yellow leaves: often due to poor drainage or iron deficiency; test soil and add compost. Brown leaf edges: caused by wind scorch or salt stress; mulch and water deeply. Fruit drop: from insufficient pollination or water stress; plant a second variety nearby. Cracking fruit: from irregular watering; maintain steady moisture. Leaf curl: from aphids; spray with neem oil in spring.