WebApr 30, 2024 · To control iris borers, remove and discard dead leaves in the fall to eliminate a number of the iris borer eggs. Larvae can also be killed by hand in June by squeezing infested leaves in the vicinity of the injury. During division, borers in lightly infested rhizomes can be killed by poking them with a piece of wire. WebFirst, apply dormant oil spray early in the season just as the leaves begin to grow. In early summer (June), look for notched leaves or damage where leaves separate. Trace chewing until you find borers; kill by squeezing, or remove and toss into soapy water. In fall, clean up all iris leaves and dispose of them in the garbage or by burning, not ...
Iris borer identification and control - Walter Reeves
WebMar 27, 2024 · Control can be achieved through the use of products with permethrin (Eight; Hi-Yield Garden & Farm Insect Control) or spinosad (Natural Guard Spinosad, Captain … WebTime control efforts according to the target pest's biology for best results. If you have questions, call us at 1-800-827-2847. Pest Borer Control Trapping and monitoring adults should be started early and continued throughout … north kansas city high school lockdown
Iris Borer - Environmental Factor
WebIris borer is the most serious pest of the iris. The caterpillars chew holes into the leaves creating a water-soaked spot. ... Control. Nema Globe EFI Sticky Traps; NemaKnights Grubs, Weevil & Borers; Advice. Remove and burn dead iris leaves, dried rhizomes, and damaged plants in late fall or early spring to eliminate the overwintering eggs of ... WebMar 2, 2024 · Adult iris borers are stout, medium sized moths with a wingspan of 3.8–5 cm (1.5–2 inches). ... Beneficial nematodes such as Steinernema carpocapsae applied to the iris bed can help control iris borer. However, cultural control measures are generally recommended for this pest because they are effective and economical. Small caterpillars … WebA well-timed pesticide application can help reduce an iris borer infestation. Two options are acephate (click for sources) or spinosad (click for sources) . It is important to apply the pesticide when eggs are just hatching. The leaves will … north kansas city high school canvas