Tulips are in the "fall bulb" classification with hyacinths, crocuses and daffodils, which means that they require the chill of winter to begin their growth and rooting. Gardeners should set their tulip bulbs outdoors in the fall to early winter.
Fall bulb planting should be timed before the first frost in any given area. Tulips can be planted when evening temperatures fall to 40 to 50 degrees Fahrenheit. However, they should be planted at least six weeks before the ground freezes. Generally, tulips can be planted in USDA zone 3 in September; in zones 4 and 5, in October; and in zones 6 to 7, in November.
Tulips bulbs don't require any special care over the winter. The bulbs should be planted in loose, quick-draining soil and compost in areas that get full sun.