Average plant height is 10 to 16 inches. This is the largest class of tulips and offers the widest range of flower colors. Triumph tulips are excellent for forcing. Parrot Tulips have deeply feathered, curled, or twisted petals. Flowers may be single or multi-colored.
Many varieties have a green spot at the base of their petals.
Parrot tulips are sensitive to poor weather and should be planted in a protected spot. Late season flowering Single Late Tulips incorporates the former Darwin, cottage, and breeder tulips. Along with the Darwin hybrid tulips, they are the some of the tallest tulips. Flowers are borne on stems up to 30 inches tall. Flowers are available in a wide range of colors.