Mike, Hi! In California, the south to north trend for first blooming is the typical one. In winter, however, I have seen cases where some species bloom earlier further north on account of the earlier arrival of rain. I am referring to bulbs planted out that rely on rainfall, of course, not hand-watering on a bench. Here in San Diego, Bloomeria crocea was finished by mid-May, Gladiolus tristis by the end of April. Amayllis belladonna is going full bore right now. Andrew San Diego, CA (at 300 feet or 90 m) Nhu, your "what's blooming" project is already teaching me some interesting things. Flowers that Mary Sue and Jane report in bloom now (Bloomeria crocea, Gladiolus tristis) are long since dormant here, with the last of their seed pods drying out and cracking open. Mary Sue's about 200 miles north of me, and Jane is 500 miles. We've noted before how the Amaryllis belladonna season starts in southern California and moves north. It sounds like that also applies to other bulbs. It would be really useful to know what exactly triggers the different growing times. Maybe temperature? Day length? I doubt it's just water, since I keep watering my pots until the plants tell me that they want to go dormant. It would be helpful if people could post their altitude along with their location when they say what's blooming. If temperature is the controlling factor, gardeners at higher elevations but the same latitude should see later blooms. Mike San Jose, CA (min temp 20F / -7C) (about 500 feet / 150m above sea level)