Coreopsis grandiflora 'Double the Sun', commonly sold as Tickseed 'Double the Sun', gives you a compact, high-energy perennial with rounded golden flowers. The plant makes a tidy mound about 12 to 14 inches tall and wide, then covers itself with semi-double to double yellow blooms from spring into summer and often again later if old flowers are removed. Bright green foliage keeps the habit fresh between flushes.
Use it where you want long-lasting warm color near the front of a sunny border, along a path, in a pollinator planting, or in a patio container. The short height lets the flowers mingle easily with salvias, catmints, dianthus, sedums, ornamental grasses, and other compact companions. Plant several together for a cheerful ribbon of yellow that reads clearly from a distance without overwhelming smaller beds.
Plant Coreopsis grandiflora 'Double the Sun' in full sun for the strongest bloom, with bright part shade acceptable where summers are intense. Well-drained soil is essential; the species performs well in lean, sandy, rocky, or average ground and does not need rich fertilizer. Once established, it tolerates heat and short dry periods, but consistent water during the first season helps build a sturdy root system.
Deadhead spent blooms to encourage repeat flowering and keep the mound neat. If foliage becomes tired in midsummer, shear lightly and water to promote fresh growth. Deer and rabbits usually leave this coreopsis alone, while butterflies and other pollinators visit the yellow flowers. Divide or refresh clumps every few years if vigor declines. With sun, drainage, and simple cleanup, you get a bright, low-maintenance perennial for weeks of color.