Tropical Style

How to Prune a Perennial Sunflower

Believe sunflowers and you probably conjure up images of taller-than-life plants using larger-than-life yellow flowers that reach toward the sun. Perennial sunflowers, like Maximilian (Helianthus maximilianus), grow from underground root constructions called rhizomes and typically, they don’t grow quite as tall and big as their annual pals. Hardy in U.S. Department of Agriculture plant hardiness …