Apple Tree - Knowledgebase Question

Mendota Heights, Mi
Question by anthonyfma
April 30, 2010
When is the best time to start to spray your apple tree?

Answer from NGA
April 30, 2010


To avoid diseases, your apple trees can be sprayed with Bordeaux (lime-sulfur). This fungicide must be applied early and thoroughly to protect new growth. Apply according to label directions; as the buds break until the leaves are fully expanded. Do this at prepink, pink, calyx, and first cover. Since the fungus overwinters in fallen leaves and fruit, be sure to thoroughly clean up and dispose of plant debris in the fall months. Horticultural oil is effective against overwintering scale insects and insect eggs and should be applied in the winter. It is sold as dormant spray. Hope this answers all your questions.

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