I just got my Asiatic lillies like at the beginning of april and they had buds on them and I planted them in my front yard garden. So they bloomed like 2 weeks ago and the petals are already falling off. Im new at this so I dont know if that is normal or not. I also water them once a week with the hose running for about 10-15 minutes. Its been really hot lately as well. There has been some rain too. They were really pretty and I was really excited about them too ... My husband got them for me:)