Blackberry
Diseases and pests

Because blackberries belong to the same genus as raspberries, they share the same diseases, including anthracnose (a type of canker), which can cause the berry to have uneven ripening. Sap flow may also be slowed. They also share the same remedies, including the Bordeaux mixture, a combination of lime, water and copper(II) sulfate. The rows between blackberry plants must be free of weeds, blackberry suckers and grasses, which may lead to pests or diseases. Fruit growers are selective when planting blackberry bushes because wild blackberries may be infected, and gardeners are recommended to purchase only certified disease-free plants.

The spotted-wing drosophila, Drosophila suzukii, is a serious pest of blackberries. Unlike its vinegar fly relatives, which are primarily attracted to rotting or fermented fruit, D. suzukii attacks fresh, ripe fruit by laying eggs under the soft skin. The larvae hatch and grow in the fruit, destroying the fruit's commercial value.

Another pest is Amphorophora rubi, known as the blackberry aphid, which eats not just blackberries but raspberries as well.

Byturus tomentosus (raspberry beetle), Lampronia corticella (raspberry moth) and Anthonomus rubi (strawberry blossom weevil) are also known to infest blackberries.
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