![Thread-leaf Tickseed, Whorled Tickseed - Coreopsis verticillata](https://tnyards.utk.edu/wp-content/uploads/sites/170/2021/02/threadleaf_tickseed.jpg)
Common Name: Thread-leaf Tickseed, Whorled Tickseed
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.