thanks Hedge
yes, the controlled release fertilizer has helped a lot - I'm glad to know I'm not the only one who fails to fertilize the cyms
I actually have a couple more cyms with multiple spikes (waiting for buds to open) that have a lot more buds on them than this one. I'm not sure if this cym may just be a less prolific bloomer, or, if because I have had it several years, and it has suffered some periods of neglect, and is taking some time to rebound and may get higher bloom count in the future.
Still, this is the best bloom this plant has had for me, so I'm quite happy with it.
I may have not even thought about the controlled release fert, if I hadn't seen some discussion about it here on OB.