Although we have some in our garden, I have never planted these myself. A neighbor gave me a whole bag (26 bulbs) of asiatic lilies and I'm not exactly sure what to do with them. The plants we have in our garden now have about 5-6 stems coming out of one spot, does that mean someone planted 5-6 bulbs close together or does one bulb eventually grow into 5-6 stems? Also, can I plant these now or do I need to wait until the fall? If I should wait until the fall, how do I store these until then? Thanks.