Ich habe auf meinem Balkon in Spanien Mandarinen- und Lindenbäume, die regelmäßig von Schildläusen befallen werden. Ich habe sie per Hand durch Abwischen mit 96-prozentigem Alkohol entfernt, aber nach ein paar Monaten kommen sie wieder zurück. Wie kann ich sie vollständig loswerden?
Von: PrimarySearch9513
4 Comments
Spray regularly with ‘insecticidal soap’ spray.
NOT the kind you make yourself. BUY the spray because it contains an active ingredient that you cannot get from household soap.
Use horticultural oil or neem oil regularly, maintain tree health, introduce natural predators, and prune affected branches to prevent scale insects permanently.
Well study for, take, and pass your state’s commercial pesticide applicator license test, then purchase and apply real, heavy duty insecticides.
Even then, occasionally you will still have pest problems to deal with.
You might succeed at removing every single scale insect attached to the leaves, but their near-microscopic babies are still there. They can walk around and hide from you. So you have to treat the plant regularly with something that is able to get into the little cracks and soak the plant all over. It is only effective if it gets on the bug and while it is wet. That’s why you have to do it several times and hit every surface. Horticultural soap is one. It is itself a pesticide but sometimes it is an ingredient with other pesticides because it makes a good surfactant. It shows up as ‘potassium salts of fatty acids’ in the ingredient list.
Natural predators are cool, you can get predatory insects, [here](https://www.naturesgoodguys.com/collections/scale-control/products/aphytis-melinus?variant=19097897041979) is an example.
I found this video. I haven’t watched it all the way through, but it has a good title [https://www.youtube.com/watch?v=jlDsiygR3PI](https://www.youtube.com/watch?v=jlDsiygR3PI)