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nutritional needs of the

Figure about 50 percent of the plants will survive,” she said. Ballow said the best time to divide plants is after they’re done blooming. She said early June, for instance, is a perfect time to divide irises. Brumbelow recommends coneflowers, phlox, Shasta daisies, day lilies, coreopsis and other spring/summer-blooming plants be divided in the early fall to enable their roots to become established before winter. - Pull up the entire plant to be divided, making sure you have sufficient roots, tubers or rhizomes, Ballow said. These will supply the immediate nutritional needs of the divided plant until it can establish roots.