Stiff Coreopsis produces copious amounts of nectar and spreads easily. As a result, a lot of insects are attracted to it. A whole lot. Digger, cuckoo, leaf-cutting, Halictid bees, wasps, butterflies, skippers, moths, flies and beetles, and many types of flies all visit Stiff Coreopsis.
Large groupings or plantings of Stiff Coreopsis will attract monarchs in droves, as they seek nectar. Learn more about how to attract monarch to your yard.
Some ecologically valuable predatory insects prey upon pest insect species.
The larvae of two moths, Wavy Line Emerald and the Common Tan Wave, feed on the flower heads. Several species, such as the Coreopsis Leaf Beetle, feed off plant juices.
Livestock, deer, and rabbits all sometimes feed on Coreopsis, and birds feast on the seeds during winter.