No, you need to do copper dormant sprays, and maybe use some at a smaller dose during the season if needed. Also I use Bonide Fruit and Plant Guard which has some fungicides very effective against brown rot, and certain leaf spot problems. I use it for brown rot, but leaf spot can be a problem here too. The Bonide product also has an insecticide, it contains a synthetic pyrethroid, lambda-cyhalothrin. More effective than actual extract from chrysanthemums. It lasts longer too. It is a light weight all the same. I need stronger insecticides for PC.
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