There are over 3,000 varieties of tulips, and they can be divided into 15 different groups. The most popular group is the Darwin Hybrid Tulips, which are a cross between two wild species. These tulips are the most perennial and will last for several years with proper care. Other groups include the Triumph Tulips, which have large flowers; the Fragrant Tulips, which are known for their sweet scent; and the Species Tulips, which include some of the oldest varieties dating back to the 16th century.