Coreopsis need containers at least 8 to 10 inches deep and wide with ample drainage holes. This plant's roots do not tolerate soggy, standing water. After several years, if the plant's roots ...

With masses of cheerful daisy-like flowers, coreopsis (Coreopsis spp ... Dig a hole about twice the size of the container and about as deep, place the plant in the hole, and tamp down.