Thread-leaf Tickseed, Whorled Tickseed

Photo Courtesy Katie Walberg

Thread-leaf Tickseed, Whorled Tickseed Coreopsis verticillata Part sun, medium to moderately dry moisture level, sandy or rocky soil, slightly acid pH.  1-2 ft. height, blooms in summer, yellow flowers, spreads both by rhizomes and self-seeding. Germination Code:  A Native Region:  ? Showy flowers with lacy-textured leaves. This species of coreopsis has a rhizomatous growth pattern (spreading by underground creeping rootstalks) and is reliably perennial even in clay soils. Easy to grow. Can spread somewhat aggressively. It is prone to powdery mildew. flower;sun/shade;medium;sand flower;sun/shade;medium;rocky flower;sun/shade;dry;sand flower;sun/shade;dry;rocky