Not all daylilies respond to BAP. We were told to apply only after the daylily is scaping or has scaped. We do know that some daylilies will abort their buds when BAP is applied. I suppose the energy goes into fan production, and this may cause the buds to fall off in some daylilies. We have only used it by spraying the solution to fans just above the crown. We have not used BAP this summer and very little last summer. We waited until the daylilies we were interested in increasing were down to their last few buds. A good watering and fertilization program goes a long way toward increasing fans, too. BAP is expensive but can be stored (NOT refrigerated) in its tightly sealed container to increase its shelf life.
