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Advertisement Gayfeather The dramatic spires of this sun-loving perennial create an eye-catching vertical element in the midsummer garden. Reaching up to 3 feet tall, the lavender, purple or white blooms attract butterflies and hummingbirds. Gayfeather needs full sun and air circulation to avoid mildew; plant roughly one foot apart. USDA Hardiness Zones: 3 to 9
PERENNIAL - Pincushion Flower Pincushion flower, or scabiosa, serves up dainty blue flowers all summer and into fall, making it one of the longest-lasting bloomers in the perennial bed. It likes sun or partial shade, and is best at the front of the bed. The foot-tall variety 'Blue Butterfly' stands up to heat best.
'Big Blue' Sea Holly for sunny garden, deer-, rabbit-, and drought-resistant perennial shows off silvery foliage and iridescent silvery-blue flowers in midsummer...wonderful cut flower and prime choice for butterfly gardens. Name: Eryngium 'Big Blue' Full sun well-drained soil Size: To 30 inches tall and wide Zones: 4-9 BLOOMS JULY-SEPT.