They're quite hardy as well. Tulip bulbs are sold by caliber or size. Within any particular type or variety of tulip, the larger bulbs will fetch a higher price than the smaller ones. For big showy displays, the larger caliber bulbs are certainly worth the price. However, some excellent bargains are to be had by buying lots of smaller caliber bulbs for brightening up a marginal spot in the spring yard.
Tulips are sun as well as shade lovers.
Remember that come spring, when tulips bloom, all the deciduous, non evergreen trees in your yard will be beautifully leafless. Species tulips refers to those varieties which have not been bred or hybridized and remain essentially as they are found in nature. Botanical tulips are hybrids, but hybrids which remain very close to the original species. All tulips sold by the Dutch, including the species and botanical tulips, are actually propagated and grown in Holland. Species and botanical tulips are generally smaller than other tulips.