The seeds are easy to germinate. I just put tons of them in giant pots and waited....and waited. So the bulbs are all crowed in the pots, which I have read that they like. I searched for how to fertilize them to increase the bulb size, to no avail. A guy I know that owns a nursery just told me to fertilize with triple phosphate. He was referring to getting them to rebloom, but I would also try it once you have somme bulblets. I used it on my big pots of bulbs in late winter. They are blooming like crazy right now. I do not remember if it is any better than in previous years. I have also used greensand on my indoor plants this year. I found it stimulated flowering indoor plants that were being stubborn to ever bloom. Have so much fun with it.