Designer Threads® 'Scarlet Ribbons' brings a deep, velvety intensity to threadleaf coreopsis, with maroon-red flowers that stay solid in color from center to petal tip rather than fading or streaking the way many coreopsis blooms do. The flowers open flat and broad, hold their shape and color for many weeks, and sit above the finely textured, thread-like foliage the series is named for — foliage that stays clean and mildew-free thanks to breeding selection specifically for disease resistance. The plant forms a neat, mounded habit about 16 to 18 inches tall and 16 to 20 inches wide, making it a tidy filler for borders, containers, and mixed plantings, and the abundant summer blooms hold up well as cut flowers too. 'Scarlet Ribbons' is an easygoing perennial suited to zones 5 through 9, growing best in full sun and average, well-drained soil, and it becomes quite drought tolerant once established. It's a low-maintenance choice that beginners can succeed with, needs little more than average moisture and fertility to perform, and its deer resistance and pollinator appeal (bees and butterflies both visit readily) make it a solid multi-purpose border plant. Like other threadleaf coreopsis, it benefits from being cut back after its main flush to encourage rebloom and keep the mound tidy through the rest of the season. This cultivar belongs to Walters Gardens' Designer Threads® collection, a series of Coreopsis verticillata selections bred and introduced under the Proven Winners Perennials brand, each chosen specifically for combining strong mildew resistance with unusually large, clearly patterned flowers for the species — most straight species threadleaf coreopsis have small, simple yellow flowers, so the bold, solid maroon color of 'Scarlet Ribbons' represents a real departure. It's patented under USPP 35,961, with Canadian plant breeders' rights also applied for, and it shares series membership with siblings like 'Heartstrings,' 'Golden Needles,' and 'Creamy Calico,' each exploring a different bicolor or solid pattern within the same compact, garden-friendly habit. Photo Credit: Walters Gardens