A fall-transplanted rose had healthy spring growth with buds showing a velvet-like white coating on the green sepals. One bud opening looked shriveled.
This fungus lives on rose parts, drying them out and distorting flowers and leaves (puckered).
Use a rose fungicide for mildew/black spot. Or try 1 tablespoon baking soda per quart of water, sprayed daily on white areas until gone. This is effective for mild cases.
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