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Quince Leaf blight is a fungal disease that can prove quite disastrous to Quince trees. It will affect most heavily when the weather has been wet and damp and results in severe Leaf spotting, eventually, your leaves will fall off, and the fruit can be spotted and distorted too.
These trees are often affected by this disease especially if you have wet summers where you live which in the Uk is hard to avoid. You can try to reduce the severity of it by pruning out dead and diseases growth in winter and clearing up any fallen leaves, especially in autumn as the spores live in the leaves over winter and then return in spring so breaking the cycle can help.
Learn how to prune quince trees
Symptoms to watch out for
You can keep your eyes peeled for a handful of potential symptoms including small, dark spots on your leaves that usually have a gray center.
You might see numerous spots on a single leaf which eventually become a large spot and cause the leaf to turn brown or yellow before it falls off prematurely. The shoot tips will die back if they are infected and the fruit can be spotted and discoloured.
How to control quince leaf blight
If this is a problem in your garden there are non-chemical and chemical control options. The problem is the none chemical is not 100% effective and the fungicides you can use cannot be used on Quince that you use the fruit from. If you have it as an ornamental tree then fungicides are a good option for controlling it.
The non-chemical control options include removing any affected leaves as soon as they fall and removing them from the tree when you see them. You want to prune away any dead shoots as well.
It’s important that you gather every leaf including those that fall to the ground, otherwise, the fungal infection can go to sleep during the winter and become a problem all over again the following spring as already mentioned.
Treating with fungicides
Chemical control methods include spraying with a fungicide known to treat leaf spot diseases. Unfortunately, there are no fungicides currently available for trees that you are growing to produce fruit that you will eat and use as they are only for ornamental trees.
Basically, if you’re going to eat the fruit from your tree, there are no fungicides you can use to control the issue. However, if you are not going to eat the fruit from the tree, you can use fungicides labelled for ornamental plants. But again if you do this it is imperative that you do not eat the fruit.
Unfortunately, the best control for this fungus is the same as any other fungus and that is to make sure that your tree has good growing conditions from the onset with the right soil which means planting in a sheltered position in moist but free-draining soil and feeding in spring with growmore and mulching around the base of trees. Keep well-watered during dry spells and hot summers.
Last update on 2021-10-15 / Affiliate links / Images from Amazon Product Advertising API