It is possible to do it now, though fall is the best. If the stems were crowded they are probably in need of division. Asiatics usually need dividing every 3 to 5 years. It really depends on the variety and on how closely they were planted to begin with.

I checked and they are asiatic lilies and they are planted 18-24 in apart. I can see bulbils on the top of the soil line right now. So I'm pretty sure there must be a large clump of bulbs under the ground. Maybe I should just try one set of bulbs for now?? There are 10 original lily bulbs planted (yellow, orange, white and one red). And I believe this would be year 4 for them all. Thanks for your help.

I divided my lilies as soon as the soil was workable. I dug them up before their noses come up. That way, I could avoid breaking the nose of the bulb or I will lose this year's blooms. Last fall, I left the dried stalk so I know where to dig. You can still divide them now, just be careful not to break the nose. I hope this help.

Thanks for the tip about the noses. I have a few that appear to have the noses already popping up. So I picked one to dig up that didn't seem to be sprouting up yet and was able to separate about 7 good sized bulbs with roots. Alot of smaller ones (I think, bulbils) that I also replanted, so maybe they might not bloom this year. I'm crossing my fingers. The main bulb was quite large though and I don't know if there was more than one with that but I left it intact and replanted it in the same spot.