You may not miss the lavender...we are here now and a lot of the fields are in bloom, but I noticed some towns don't have their lavender festivals until into the first week of August. We passed lots of sunflower fields that looked like they were still a few weeks away from bloom...and some that were in bloom.
I just wanted to mention a town we stopped into yesterday...Moustiers St Marie (you may want to double check the spelling)...it was quite a nice little town...there was a waterfall/River (maybe river is too big a name for it) thru the middle of town and it was quite pretty.
We did visit Vaison but we have been to so many small towns the last week, I can't recall what we saw where until I can look at the photos.