Getting Etlingera to set seed
Is there a time factor involved in getting etlingeras to set seed? I have tried hand-pollinating E. venusta and E. elatior countless times and no set, either selfing or crossing the two. Our neighbor has some old established clumps of both the red and pink torch and gets some degree of natural seed set, although if you look at the old flower heads, sometimes it's like just one or two rows of flowers got pollinated, and the rest are duds. Or sometimes one whole head is full of fruits whereas an identical one next to it has none. They don't hand-pollinate, so something is doing it, but sporadically. They've allowed us to collect those seeds, and we've had good luck germinating them, but we have some different varieties that I'd like to get going and/or cross. There's plenty of pollen, and I'm reasonably sure I'm putting it in the right place, but maybe I'm not doing it the right time of day. My husband things they may be receptive at night. Any clues? What am I doing wrong?