Most of them are native to the Mediterranean region. Daffodils come from Spain and Portugal. Crocus are native to the mountains of Southern Europe (Greece, Turkey, Crete and elsewhere). Tulips are native in the mountains of Central Asia (Eastern Turkey and the foothills of the Himalayas). Flowering apricots come from Asia, too.

The earliest are Hepatica. Hepatica americana is blooming now in the Garden. In the last couple of years, we saw the first flowers on Feb. 22 and Feb. 29. So it's delayed this year. My gardening companion had looked for flowers of Hepatica last week in his plant ecology lab.
And the trout lilies (Erythronia americana) are well along.
