Just about all the catalogs that I get in the mail have them in the spring, but it's very late to be ordering them now. In most areas those lilies are in bloom by now. You'd be better off to wait and order early next spring to get good quality, and the ones you really want.
I did a quick search of a few places I've ordered bulbs from, and they are mostly "sold out" and are selling fall-planted bulbs now.
Here's one that is still selling, at a discount but I must admit I don't order from them any more because I've had some less than satisfactory bulbs arrive.
http://www.dutchgardens.com/de...
This one also seems to have some left, and is giving 25% off. Again, buyer beware, you are getting the season's leftovers!
http://www.dutchbulbs.com/cate...
