Troubleshooting
Crimson and Gold quince problems — and how to fix them
Crimson and Gold quince (Chaenomeles speciosa 'Crimson and Gold') is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Scale insects
Brown or grey waxy scale on stems, causing stunted growth and sooty mould below. Treat with horticultural oil when dormant in late winter; target crawlers with systemic insecticide in early summer.
Fireblight (Erwinia amylovora)
Blackened, wilted shoot tips in spring, often during warm wet weather. Remove infected wood 30 cm below visible damage into clean wood; sterilise tools; avoid high-nitrogen feeding that creates susceptible soft growth.
Reluctance to flower on young plants
May take 2–3 years to flower freely after planting or hard pruning. Avoid heavy nitrogen; prune lightly immediately after flowering (not in autumn, which removes next year's buds) to encourage spur development.
Prevent crimson and gold quince problems before they start
Most crimson and gold quince issues are care-mismatch, not bad luck. Dial in the basics:
Crimson and Gold quince problems — FAQ
Why is my crimson and gold quince scale insects?
Brown or grey waxy scale on stems, causing stunted growth and sooty mould below. Treat with horticultural oil when dormant in late winter; target crawlers with systemic insecticide in early summer.
Why is my crimson and gold quince fireblight (erwinia amylovora)?
Blackened, wilted shoot tips in spring, often during warm wet weather. Remove infected wood 30 cm below visible damage into clean wood; sterilise tools; avoid high-nitrogen feeding that creates susceptible soft growth.
Why is my crimson and gold quince reluctance to flower on young plants?
May take 2–3 years to flower freely after planting or hard pruning. Avoid heavy nitrogen; prune lightly immediately after flowering (not in autumn, which removes next year's buds) to encourage spur development.