DO NOT INCREASE PLANT SUSCEPTIBILITY TO PROBLEMS THROUGH NEGLECT OR IMPROPER CARE. Additional information is in Extension bulletin E-1936, "Selecting Ornamental Plants" and

All plants can be affected by environmental and cultural problems. Only those occurring most frequently are listed here. Use pesticides only after an accurate diagnosis and control recommendation have been made. Use pesticides strictly in accordance with label directions. Always wear protective clothing and do not spray on windy days.

This list is for educational purposes only. Inclusion does not imply endorsement and omission does not imply discrimination. Not all of these pesticides are labeled or recommended in all states.

Viburnum Disease Problems Anthracnose control - benomyl Bacterial leaf spot control - copper Crown gall no chemical control Downy mildew control - thiophanate-methyl Leaf rust control - triadimefon Leaf spot, fungal control - copper Powdery mildew control - benomyl, chlorothalonil, lime-sulfur Verticillium wilt no chemical control

Insect Problems Aphids control - diazinon, insecticidal soap

Plant bugs control - diazinon, rotenone, superior oil

Scales control - adults: superior oil

crawlers: diazinon, acephate, pyrethrum, superior oil Spider mites control - superior oil, insecticidal soap

Controls reported to cause plant injury - malathion

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