I'm potting up bulbs of l.viridiflora and l.aloides, and not sure how they should be set in the (gritty) medium, and how much room in the pot they require. I understand that they're heavy feeders, and prefer lots of sun, regular moisture in a very cool environment, and also read that they can be a little crowded in the pot? Any practical advice here will be appreciated. Thanks, Rick Buell