Many species of tulips originated in Turkey, eastern Europe, and ancient Persia, while others came from the steppes and mountains of central Asia or from Spain, Greece, Crete, and North Africa. They thrive in climates with long winters; cold, wet springs; and hot, dry summers.
If you live in the northern states of USDA Plant Hardiness Zones 4 to 6, just about any species tulip works for you. If you reside in the South, however, or mild-winter areas of the West and don't want to bother with putting your bulbs through a "chilling" period, plant species tulips that overwinter in Zones 8 through 10.
Species tulips are often listed in the "other" or "miscellaneous" sections of bulb catalogs.
Brent and Becky's Bulbs brentandbeckysbulbs.com
Dutch Gardens dutchgardens.com
John Scheepers johnscheepers.com
McClure & Zimmerman mzbulb.com
Old House Gardens oldhousegardens.com
Tulip World tulipworld.com