Does anyone know what and when to spray for leaf miners on Korean box?
check with Cooperative Extension - there are several sprays as well as some cultural controls - http://www.hgic.umd.edu/Alice Nicolson, Arlington VA Master Gardener and (sort of) rock gardener in Z7
I didn't even know boxwood ever got leaf miners. Of course, they are not a common plant here in the north, even though big box stores sell tons of them. :rolleyes:
Welcome to the forum, Alice. And thanks for the link. Many years ago, our U of Minnesota had a hort hot line, but they became so inundated with calls that they were forced to begin charging a fee. We still have the county extensions and other free resources, though.
Rick Rodich zone 4a. Annual precipitation ~24 inches
near Minneapolis, Minnesota, USA