Just have to add my two cents. I have Four plants of N. caerulea in my gardens here in the Inland Empire of Southern Cal. One in dry, high shade. One in dry sandy A.M. sun. One in full sun border, dry and hot. One in edge of lawn, hot afternoon sun with regular irrigation. They all bloom exactly the same, which is June and July. July gets to be 100 degrees easily every day with no humidity. We also get occasional frosts every winter. No damage. Tough plants!!! Terry Hernstrom Kimberly Crest House & Gardens Redlands CA (Where the weather is perfect right now! 85 degree days and 55 at night. Bulbs that are blooming: Nerines, Paperwhites, Glad, dalenii, murialis,(sp) Oxalis and more)