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.
For full-size dahlias, a pot. For full-size dahlias, a pot about 12 to 20 inches wide and deep (or wider) works well. (Taller varieties will do better with the larger sizes.) Ideally, plant only one tuber per container, although some gardeners have had success with more than one in a pot.