Alstromeria

Alstroemerias are really popular now and almost all of the nurseries carry them. A small nursery in North County called Garden Glories seems to always have some long blooming varieties in several shades. Walter Andersen's Nursery usually has good ones, as does Mission Hills Nursery. I don't know what area you are in, but if I were you I'd just pull out the phone book and start calling the closest ones and find out what they have in stock.