| General recommendations. This insect pest derives its name from the adult's lacy looking wings. It primarily affects chrysanthemums in both its juvenile and adult stages, feeding on leaves and stems. It is also a serious pest of azaleas. The foliage of infested plants will develop a bleached appearance, stems will be damaged and there will be resinous, dark droppings on the underside of leaves. Treat such plants by spraying all surfaces with insecticidal soap every 3 to 5 days for 2 weeks, making sure that you get the undersides of leaves. Severe infestations can be effectively treated with 3 applications of pyrethrum laced with isopropyl alcohol spread out over 1 to 3 day intervals; spray early in the morning when lacebugs are least active. Prevent future infestations by thoroughly cleaning up your garden in the spring and fall to discourage overwintering insects and eggs. |
