Asiatic Lily Sprouts . Adding organic matter will help improve the soil. Do i leave it in the garage, where it is now?. Pray For Lilly Lily bulbs and a new Trisomy Awareness billboard from pray4lilly.blogspot.com The flowers grow in clumps and spread as they mature, which takes. Others need a 3 month warm period followed by a three. Ps if you have lilies that are sprouting and it is still too cold, try covering them with something.tree branches, etc.