The AMC had three alpine garden workshops (subtitled "the mountain in bloom") scheduled for June 14, 21, 28. They've now canceled the June 14 workshop and added one on June 23. Whether that was for lack of enrollment or some other reason or because spring is late I don't know, but I'd guess the latter. May was unusually cold here, and breeding and blooming is delayed. I'd shoot for the 3rd to 4th week in June.