Juang-Horng “JC” Chong
Department of Agricultural and Environmental Sciences, Clemson University

William E. Klingeman
Department of Plant Sciences, University of Tennessee Institute of Agriculture

Frank Hale
Department of Entomology and Plant Pathology, UT Extension, University of Tennessee Institute of Agriculture


This table include pesticides action, common names and ornamental pests.
It will help you to choose the right insecticides for pest management and rotation to avoid resistance.


• Pest resistance to insecticides and acaricides is a growing concern. Efforts to limit pesticide resistance should be an active part of IPM decision-making. Populations of pest species infesting ornamental plants—like Tetranychus and Panonychus spider mites, western flower thrips, glasshouse and silverleaf whiteflies, and green peach aphids—are among the top 12 species to have developed resistance to multiple pesticide active ingredients (a.i.) spanning several chemical classes. Cross-resistance by populations of pest arthropods is increasingly common to multiple a.i. products within an IRAC group. Serial applications to control a generational cycle of a pest should NOT be made using a.i. products within an IRAC Group. Cross-resistance occurs much less commonly between IRAC groups. See footnote 25 for information about recommendations for rotation between IRAC groups, particularly when managing select pest populations.
• More detailed information about modes of action and pesticide resistance will be forthcoming in a publication titled “Understanding Insecticide and Miticide Modes of Action Used to Manage Arthropod Pests of Ornamental Plants.”
• Product labels change frequently and will include more details and specifics about potential phytotoxity that may result in certain plant species when products are applied or used at certain rates. All product labels should be reviewed prior to treatment application. Footnote 12 as provided within the chart can assist in indicating products with labels that may provide additional details regarding plant safety.
• Many product labels, particularly among generic products (e.g., carbaryl, bifenthrin, imidacloprid and others) differ in many regards, including which pests may be controlled, details about plant safety/phytotoxicity, re-entry intervals, etc. It is the applicator’s responsibility to consult each product label prior to application and understand its restrictions and limitations.

Download An Ornamental Plant Pest Management Guide and Pesticide Rotation Planning Aid