I planted a few 'Casa Grande' tulips (greggii) for 2 neighbors who have since moved... in both front yards, they are still returning and blooming each year, and they've had virtually no care for 7 years. They are also the absolutely biggest tulip bloom i've ever seen. I have them planted with 'Queen of the Night', nice combo, and both have been blooming for several years here. In general, I have good results with greggii tulips returning year after year, and of course with "species" also.
My big disappointment this year was 'Unicum', a little red tulip (T. praestens) with white-edged leaves. I planted 50 of them with 100 Muscari 'Ocean Magic', and I guess voles or something ate all but 1 bulb, and a bunny took a bite out of that bud. I'm not disappointed with the variety, just disappointed that I didn't get to see it!
