Just received an e mail from Ibrugs.com on my bud drop question. According to them this can be caused by one or both of two things. Improper watering and thrips. I used insecticidal soap on all these plants the morning I brought them in. They stayed on the patio till they were dry.
Improper watering? 2 gallons morning and afternoon wasn't enough? They go in the ground next year. They really do,.,