Hi prmetime--welcome aboard! I just saw your reply here or would have gotten back sooner....

He told everyone not to switch at all--and showed a slide with the data. The plants that were switched actually had shorter spikes and fewer blooms. I had always been under the impression that a blossom booster would help initiate a spike if the plant was ready to do that, but apparently, this is not the case. Spike initiation is more a function of temperature and light levels. He had gone on to show how you could time a spike's initiating by literally growing the plant in the dark for several months. And I don't mean deep shade, I mean near complete darkness. He had several slides with a tablefull of plants that were covered by a black tarp, and told us that this practice was very common in the industry for timing spikes so that blooms are just beginning to pop for, say, mother's day. I wish I had taken notes instead of just sitting there with my mouth hanging open....