Fruit and Vegetables

Cherry insects

Cherry insects



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Question: cherry


Good morning, I have a cherry tree of about ten years that for three years now has been producing a lot of fruit but before reaching maturity they are filled with dark dots and deform, and then become moldy as they begin to ripen. The leaves are all full of black dots as well as becoming yellow and then all falling before the summer.
I would like information on this. Thanks

Cherry insects: Answer: cherry


Dear Danilo,
what you describe would seem to be an infestation by the aphid of the cherry tree, also called black aphid or cherry louse; these are small insects, which lay eggs on the cherry trees in autumn: when spring arrives, the eggs hatch and give rise to a rapid and widespread infestation. The cherry aphids are dark, often black and shiny, and of tiny size; they have a pungent and sucking apparatus; aphid stings cause tropism on the affected cells, and therefore all the parts attacked by these insects (leaves, shoots, fruits) tend to deform dramatically. Often the infestations are really huge, especially during the flowering period, when there can be more generations on the plants together. After having devastated the cherry trees, in summer the insects come down from the trees, they hide on the weeds at the base of the tree, and they wait for cooler climates to lay their eggs, ready for the following year. However, they are aphids, or insects that are generally very sensitive to the most common insecticides, based on pyrethrum or imidacloprid. The problems presented by the treatment of the infestation of the cherry aphid are usually due to the size of the trees to be treated, and to the period of development of the aphids: these insects are particularly active at a time when there are many flowers in the garden, and insecticides useful against aphids generally have a broad spectrum of action, and therefore threaten all insects, even useful ones.
For this reason, a treatment is usually treated before the blooms, and one later, when the flowering is now a memory, in an attempt to avoid damaging bees, spiders, ladybugs, and other useful insects. There is also the possibility of administering the insecticide by endotherapy, but it is a difficult method for a private individual to implement.