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.
Sunflowers are of either standard height or double dwarf. The dwarf sunflower seldom achieves more that 40 inches in height while standard height hybrids can exceed 6 feet if growing conditions are good. The primary advantage of dwarf hybrids is lodging resistance.