What diseases affect quince?

Brown rot and blossom wilt, Fire blight, Honey fungus, Black rot and frogeye leaf spot

Quince pests and diseases: how to recognise them

Q: Which quince problems need quick action?

Brown rot and blossom wilt: Rotted fruit dries into shrivelled mummies that stay on the tree. Fire blight: Blossoms wilt and turn brown to black at flowering time. Honey fungus: Black or brown root-like cords ("bootlaces") on the roots and in the soil, mostly in the top 15 cm.

Cydonia oblonga

The pests, diseases and disorders recorded for quince in our library, each with a photo and its first symptom. Every page has the full list of symptoms, organic and chemical treatment and prevention.

At a glance

Problems in total	6
Pests	2
Diseases	4
Need quick action	3

How to grow quince · All pests and diseases

Pests

Codling mothA hole in the side or the eye end of the fruit, often plugged with reddish-brown crumbly droppings.Also called: codlin mothPhoto: Simon Winkley & Ken Walker, Museum Victoria, CC BY 3.0 au, Wikimedia Commons
Pear slug sawflySlimy, slug-like dark larvae up to about 10 mm long on the upper side of the leaves.Photo: Didier Descouens, CC BY-SA 4.0, Wikimedia Commons

Diseases

Which quince problems need quick action?

These spread or do lasting harm fast; check the plants and start treatment the day you see them.

Brown rot and blossom wilt: Sunken cankers may form on twigs where the infection spreads from flowers or fruit.
Fire blight: In wet weather a light tan or white bacterial ooze seeps from infected bark and cankers.
Honey fungus: Clumps of honey-coloured mushrooms around stumps or over dead roots in late summer and autumn — not every year, and plants may die before any appear.

Plants with many of the same problems

Which plants each problem affects: sources

The links between these problems and the plant were checked against these pages.