I frequently read how long it can take Nep seeds to germinate, but I'm interested in the other end of the spectrum. I'd really like to hear first hand accounts of people's quickest germinations. Thanks!
Marc, you have brought up a couple of valuable points; climate conditions play a role in germination speed (and possibly percentage of seeds that germinate), and some hybrid seed lots have less than 1% germination rates - even those that appear to produce huge numbers of viable embryos. (This mirrors my experience, anyway) I have had some seed recipients achieve germination weeks before I got any, and vice versa. Temperature seems to play a significant role: warmer conditions bring about germination sooner. (Not surprising.)
I recently harvested a few crosses from N. Helen (From BE; spathulata X spectabilis, select clone, female) and it appeared that almost every seed contained a fat (and presumably viable) embryo. Well, six weeks from sowing there has been some germination of these crosses, but at a rate of less than 1%, much to my surprise. Of course its always possible there will be a rush of new germinations in the weeks ahead, but I have a feeling that is unlikely.
With complex hybrids, results can (and often are) unpredictable.