The Best Perennial Flowers for Zone 4
Perennials are the workhorses of your flower garden, blooming reliably every year and delivering big visual impact with very little maintenance and upkeep. Many perennials also make excellent cut flowers for arrangements. Here are a few of our favorite perennials that are cold-hardy enough for Bismarck’s USDA zone 4 winters. Black-Eyed Susan (Rudbeckia) Black-eyed Susan […]