Mildew Prevention and Treatment in Bonsai

What to do when your bonsai is infected with mildew?

Mildew is a fungal infection which particularly affects hornbeam, rose-family members and oaks. In early summer leaves discolor, get brown spots and a white coating. As a result, photosynthetic efficiency drops and the tree just looks ugly.

What can you do in winter to protect against mildew, how do you manage bonsai in spring against mildew and what can you do in summer to treat mildew?

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