How To Keep Coreopsis Blooming. Drive 3-foot-tall bamboo stakes into the soil with a mallet next to the flower clump. Likewise how do you keep coreopsis from falling over.
Provide shade for the rest of this week. From late summer feed every 2 weeks with a liquid fertilizer high in potash such as tomato fertilizer. Afterward plant your coreopsis 12 inches apart and theyll bloom at around two months.
The form of the plant in early spring is perhaps the easiest to work with.
21052020 Coreopsis do not require fertilizer to bloom and thrive though adding compost in the spring will keep the plants healthy. After that they are quite drought-tolerant. In Spring Before they flower in spring cut back coreoposis one section each week over the course of several weeks to control height and encourage staggered flowering. For perennial coreopsis if they begin looking weak with fewer flowers after three years or so divide them if needed in spring or early fall.