Some of my Spanish lavender plants looked shriveled up, pale and dry couple of days ago. Now they are completely gray and brittle, and look dead, with black tiny dots on the dry leaves. Same lavender plants next to them look great and are setting buds. They all came from the same nursery and were planted at the same time, 6 mo ago. A month ago all looked great and growing strong. I'm bummed because I planted all in a row for a continuous effect. Did not find any bugs other than ants. I live in Florida.