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Question: aphids

she told me an old lady that she keeps away the aphids buried under the foliage of the infested plant
chopped onions.
Does it result?
Thanks and arrivderci
Giovanni da brescia

Aphids: Answer: aphids

Dear Mr. Giovanni,
We thank you for contacting us about the problem of aphids on plants through the Expert's column
The presence of aphids on ornamental plants is widespread.
These insects are equipped with a sucking mouthparts, can settle on all parts of the plants, and create a progressive deterioration of the plant. Their size at the adult stage varies from 2 to 5 mm in length and can be of various colors from green to blackish depending on the species of Aphis. They feed by sucking sap from plant tissues, especially from leaves, shoots and green parts of the plant. They produce a waste liquid loaded with sugary substances that takes the name of honeydew. This sticky substance, when the infestation is massive, constitutes a shiny layer. Following the attack of aphids, the plant can be affected by direct and indirect damage. That is both following the removal of the lymph that causes general decay of the vegetable organism and in more serious cases it can lead to death both through the predisposition to the onset of various other opportunistic pathologies such as fungal. Regarding your question, we are sorry, but we have no information on the aficida effect of onions.
Yours sincerely.