I water them my wife must have planted them a few years back because they just appeared, she doesnt garden or anything so i took it over, horticulture is my background. IMO lilies just grow regardless, I had worms last year on my day lilies and they where crap, some didn't open, the ones that did where half eaten anyways they come back every year, ive only got two stargazers but am happy that a new plant grew this season, hopefully next year we'll get a couple more. Ive only recently took to growing my own flowers the last two three seasons, I really enjoy it, cant wait till next year!