Cut flowers for a bouquet early in the morning. Immediately place them in water. Good cut flowers include purple or white coneflower (Echinacea), black-eyed Susan (Rudbeckia), zinnias, salvia, dahlias, sunflowers, Mexican sunflower, celosia, jewels of Opar, cosmos, dill, fennel, globe amaranth, blanket flower (Gailardia), bee balm, phlox, yarrow, and ornamental grasses.