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By John71

United Kingdom Gb

do i have to spray new apple and plum trees



No, not unless they're infected, which they certainly shouldn't be.

14 Feb, 2011


I would find out if there is a destructive pest that is common locally, and maybe spray for that. Here in the desert, we need to spray every spring to prevent infection with flat-headed borers. Pests that are only annoying, such as many greenfly or leafhopper species, should be left alone to raise the local predator levels.
Fungal diseases may be a different matter, since they have few "predators", and organic preventatives are more available.

15 Feb, 2011

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