Other Pests Other pests that can be found on mums include leafminers, mealybugs, lacebugs plant bugs, leafhoppers, spittlebugs, whiteflies, and thrips. Most of these pests are found on a number of ornamental plants. Most are controlled with common home garden insecticides, properly timed. Follow label directions. Problems can be minimized by choosing a good planting site and using other good cultural and fertility practices.
Plant mums into only well-drained areas of the yard.
The major diseases of mums in the home yard are outlined below. Root and Stem Diseases Diseases attacking the roots or stems of mums usually result in partial or complete wilting of plants. If plants wilt and fail to recover when sufficient moisture is supplied, it may be root or stem problems. Two fungal diseases that cause similar symptoms are Verticillium and Fusarium. These both attack the vascular system of the plant and interfere with the movement of water into the foliage.