Most elephantâs ears are perennials and will come back every summer in the Lower, Coastal, and Tropical South. Some are perennials in the lower part of the Middle South.
Dahlias are available in different heights, dwarf dahlias are normally 12 to 18, and the taller dahlias grow 5' to 6'.Dahlias up to 2 ft.ahlias are available in different heights, dwarf dahlias are normally 12 to 18, and the taller dahlias grow 5' to 6'. Dahlias up to 2 ft.
How to Prune Tall Lilies. Long-stemmed tall lilies can have several large blooms on a single stalk. Lilies (Lilium) have large flowers that grow on tall, slender stalks. Widely planted types of lilies include Asiatic, oriental and trumpet. Asiatic lilies are slightly smaller than oriental lilies. Trumpet lilies, with their distinctively shaped flowers, stand tallest. Lilies grow in U.S. Department of Agriculture plant hardiness zones 4 through 8. Their height varies from 2 to 5 feet tall depending on the lily type and the growing conditions. Pruning needs are mainly limited to cutting the flowers and winterizing the plant.