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Coreopsis, also called tickseed, is a long-blooming perennial wildflower for dry, lean soils. Keep it deadheaded and it will bloom all summer. The most popular species for home gardens are threadleaf coreopsis (C. verticillata), which has small blooms and attractive, deeply cut foliage, and lanceleaf (Coreopsis lanceolata), which has larger flowers atop upright stems. Most have yellow flowers, some are bicolored. Coreopsis has the added benefit of being deer resistant and
bee-friendly. Threadleaf is hardy in Zones 5-9, lanceleaf in Zones 4-9.
