New lateral branches will develop along the stems. Pinch again when these new shoots reach a length of 6 to 8 inches. Pinching can be done with your fingers or a pair of clippers. Continue pinching until late June or early July. Pinching results in bushy, compact plants with additional flowers.
Water mums thoroughly during hot, dry weather.
Water deeply once a week. Avoid wetting the foliage when watering to discourage possible disease development. To conserve soil moisture, mulch chrysanthemums with 2 to 4 inches of grass clippings, wood chips, or other materials. The mulch also helps control weeds. Encourage plant growth with a monthly application of fertilizer.