I had 2 Almost Black lilies last year and one did not do well over the winter so I ordered a Black Princess lily online that came bare root. i planted it in a oil pan with top soil and seemed to be very doing well with alot of pads but I havent got one bloom yet. They both get fertilizer tabs and are both in oil pans, the only different that I can think of is the one that is blooming from last year is it is still in the clay soil that it was in when I bought it with some top soil around it in the pan. Any thoughts?