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.
Plants of yellow cosmos can range in height from 4 to 7 feet but the cultivated varieties such as 'Crest Red', 'Ladybird Dwarf Red', 'Ladybird Dwarf Gold', 'Ladybird Dwarf Orange', 'Ladybird Dwarf Lemon', and Yellow Cosmos - Klondyke Mix are not as tall. The flower heads are composed of disc and ray flowers.