Both coreopsis grandiflora and coreopsis verticillata spread by rhizomes and are also self-seeding. In areas where coreopsis is perennial, the plants may need to be divided or replaced every 3 to 5 years.

When should coreopsis be planted?

Spacing: While this varies with the species and cultivar, generally 12 to 18 inches apart will work for most. Planting: Since these are usually found in pots, you can plant the perennial ones most anytime, from early spring (they may tolerate light frost) through early fall.

What can I plant with coreopsis?

• Scatter them throughout the ornamental garden for bright punctuations of color.
• Team them with the spikier shapes of Veronica, Liatris, and Salvia to add texture to your landscape.