I find that you must soak them untill they start to swell.... this could be up to a week..... any that float to the top are bad..... dark ones are bad as well...... :)

thanks so much for the tips, I am anxious to see these flowers start growing!!!

I'm wondering if you have enough time in your growing season to get blooms. Anyone have any thoughts on that? They'll germinate quickly, but maybe won't flower. Maybe. If you have a bunch of seeds, you might want to set some aside for next season just in case.

Moonflower vine is an annual - treat them like morning glories b/c that's what they essentially are. Mine are in part sun - they are climbing a large willow teepee trellis.

I would soak them at least 48 hours and perhaps nick them with a nail clipper if you wish. I've been told by morning glory people that it's best not to fertilize - otherwise you get plenty of green and very few blooms.