Botrytis infection of flowers showing short “hairs” There have been some reports of localized patchy frost damage the last week of May followed by Botrytis symptoms showing up this week. Frost will make blossoms more susceptible to Botrytis infection.  I have heard this from growers in the Union area and around read more 6.06.14 Some Reports of Botrytis Blossom Blight and Frost