Most perennial garden flowers can serve double duty as cut flowers. Here are a dozen to get you started: black-eyed Susan (Rudbeckia), blazing star (Liatris), chrysanthemum, delphinium, false sunflower (Heliopsis), goldenrod (Solidago), iris, obedient plant (Physostegia), peony (Paeonia), purple coneflower (Echinacea), Shasta daisy (Leucanthemum), and yarrow (Achillea).