Experts and BHG readers answer.
Foliage falling off and brown bottom of lavendar
Sadly, there's not much you can do. Lavender likes sunny, dry conditions with low humidity. It is a Mediterranean plant that prefers that type of climate. In the southern part of the U.S. it can struggle due to the humidty and moisture. I'm not sure what to tell you here. When the weather dries up, it should help a little.