Or attract natural predators for natural sawfly control. Remove infested leaves or for more severe infestations spray with a forceful spray of water or use soap, horticultural oil and water or neem oil. If you've used Rose Rx Drench within 6 weeks the larvae should be controlled. Begin looking for sawfly larvae in mid-spring (rose sawflies) or early summer (pear sawflies). Adult sawflies deposit eggs on the undersides of leaves.To prevent and control infestations, in mid spring inspect both leaf surfaces. Organic Materials Review Institute (OMRI™), Rose slug, a sawfly larva (Hymenoptera), on underside of rose (, Rose slug (Hymenoptera), a type of sawfly larva, and damage on underside of rose leaf (, The rose slug is a sawfly larva not a caterpillar and cannot be controlled with, Rose slug (Hymenoptera), a type of sawfly larva, and typical skeletonized damage on upper leaf surface of rose(, Adult pear sawfly / pear slug (Hymenoptera) found on a rose leaf (, Rose slug, a sawfly larva (Hymenoptera), and feeding damage on upper leaf surface of rose (. If the infestation is light, pick off and destroy the larvae. Join the RHS today and support our charitable work, Keep track of your plants with reminders & care tips – all to help you grow successfully, For the latest on RHS Shows in 2020 and 2021, read more, RHS members get free access to RHS Gardens, Free entry to RHS members at selected times », Reduced prices on RHS Garden courses and workshops, Our Garden Centres and online shops are packed with unique and thoughtful gifts and decorations to make your Christmas sparkle, General enquiries
To control heavy infestations, use horticultural oil or spray with spinosad. The roseslug has one generation per year, with larvae appearing in mid to late spring (May). Management of rose sawfies . Check roses in May and June (in Maryland) for the slug-like, greenish-yellow larvae on the under surface of skeletonized leaves. Bug Clear Gun for Fruit & Veg, Neudorff Bug Free Bug and Larvae Killer). You can also use neem oil or manual removal. Westland Resolva Bug Killer), deltamethrin (e.g. Check roses in May and June (in Maryland) for the slug-like, greenish-yellow larvae on the under surface of skeletonized leaves. Once they mate they deposit their eggs on leaf edges and they process continues. Start inspecting your rose plants about mid … Curled roseslugs initially feed by skeletonizing the leaves, but eventually defoliate entire leaflets except for the largest veins. Sawflies … Bug Clear Ultra) is also available. The three species are all similar in color (light green), but are easily distinguished: bristly roseslug sawflies have bristle-like hairs covering the body, and curled roseslug sawflies curl up the body when at rest. REC, Western Maryland
Damaged areas dry up and become white or pale brown; this type of damage is known as window paining. Adult sawflies and ¼ inch long and resemble a black wasp. However, roseslugs can be active through the fall. Bristly roseslug larvae are about 5/8" long and greenish white with long, stout bristles. To prevent rose slug re-infestation, spray Dominion 2L every 2 or 3 months for continued protection and control and tend to your rose garden regularly. Larvae appear several weeks later, feed on soft leaf tissue for about a month, and then drop into the soil to pupate. For infestations where picking them off an option, spray them off with a forceful stream of water. Crop Rotation, Succession & Companion Planting, Lily-of-the-Valley Shrub, Pieris japonica.