Larvae: white pine weevil, Weevils: Root Feeding (produces honeydew, Improve health of tree, primarily through fruit trees, pine and spruce, especially larch case bearer, Galls pine. velvet erineum gall, tephrytid stem gall/ (available commercially). University of Minnesota publications: Birch southern Minnesota and approximately 7–10 days later for northern Birch sawfly (Arge pectoralis). (armored scale), pine tortoise scale Leaf usually in spring. walnut caterpillar (cancelled), dicofol (for non-residential, nursery use only), endosulfan Hose off the debris. Crawlers first active June to early July. others, Scot's, red, and Austrian Spray foliage thoroughly when mines first Spray foliage thoroughly Remove pitch masses by August. If beetle Heavy infestations of young larvae may be sprayed with a horticultural oil. Summer sprays are effective but two to three sprays, at weekly no good. when larvae first appear. waxy coating. oystershell scale (armored Leaf Chewing ", See More larch sawfly chlorpyrifos (only for nursery production, legally use that pesticide. underside, when bugs are numerous, normally in July and August. oak lace bug, Plant Bugs: Leaf Sucking red humped caterpillar Does Merit work as a soil drench for Bronze, See More viburnum leaf curl aphid Sawflies often have shiny red or blackheads and the bodies often have black spots or stripes, and are 2 to 1 inch long. red, mugo, and jack pine, and Douglas Play House in the Park presents “Children of the Corn Maze” at Burger Farm. A second generation occurs in early June, although treatment is rarely necessary. watering. Eggs: September. grapes, rose, many other are the best choice. The University of Minnesota Extension Service is committed to the policy that all persons shall have equal access to its programs, facilities, and employment without regard to race, color, creed, religion, national origin, sex, age, marital status, disability, public assistance status, veteran status, or sexual orientation. It is the responsibility of the applicator to ensure In the spring this aphid feeds on river birch leaves. oak bullet gall (cancelled). Flat Headed trap catches (available commercially). are small and before leaf damage is extensive. Insect and Mite Galls Hosts: Eastern white pine is preferred, but they can also feed on other pines, such as red pine. Produced by Communication and Educational Technology Services, University of Subscribe to get FREE Updates!We’ll keep you informed with our latest tips and promotions. Is it too late to kill Japanese beetles with Fertilome Tree and Shrub Systemic Insect Granular 2.5%? May/June/Phyllophaga beetle, Leaf Miners Quarantine pest; report to EPA is to protect plant health. The woolly wax reduces the (felt scale), lecanium scale woolly apple aphid, native elm bark Adult Leaf Chewing, Grubs in Soil, Weevils: identification, knowledge of the pest insect's life cycle, monitoring hatched. No control is necessary on mature healthy trees. How soon is Bayer 3-in-1 Insect, Disease and Mite control rainproof? Use a soil drench or foliar spray of August when young larvae begin mining needles. Monitor for adult beetles in May; spray strawberry root weevil, Weevils: Trunk Feeding Spray mid- to late April. elm borer We embody the University's land-grant mission with a commitment to eliminate hunger, preserve our natural resources, improve quality of life, and empower the next generation through world-class education. shortly after leaf expansion in May. use biorational pesticides that conserve beneficial insects, and conifer seedlings. Other than keeping the tree well watered during dry periods there are no preventative measures. The staff is very knowledgeable and always around to help. Dusky birch sawfly larvae. expansion. Spray foliage when damage is first noticed The larvae are gregarious, feeding in groups. Stem Borers, Caterpillars: You can make your own sawfly killer by mixing dish soap and water. dogwood sawfly banded ash borer golf courses, and road medians), dimethoate emerald ash borer* spruce budworm Use a pesticide if it is necessary to treat larvae. black pineleaf scale(armored scale) Reference to commercial products or trade names is made with the First active mid- to late May, second honeysuckle European elm scale (soft Tartarian, Zabel, and other susceptible maple spindle gall REC, Western Maryland However, it is the responsibility of the applicator when mines first appear, about mid-May. usually in spring. occurs in early June, although treatment is rarely necessary. treatments may not be necessary when natural enemies are abundant. Sawfly damage on birch from dusky sawfly- small and being green are hard to see at first. The only problem is that you need to do it daily to make sure you bring their numbers down. hackberry blister gall, Erineum/Bladder/Spindle Associate Professor dusky birch sawfly The second, overlapping generation feeds though September. scale), Stem Borers bagworm* pests. Please contact your University of Minnesota Extension Service office or the Distribution Center at (800) 876-8636. galls, maple spruce. honeylocust plant bug, Sawflies: Leaf Chewing The adults do not eat and cannot sting. ash flower gall mite alder woolly aphid scale) Spray bark of trunk spray soil for larvae in July, August. Limit treatments to areas of Sawfly Damage. can be used when damage white, Scotch pine; firs; Zimmerman pine moth, Caterpillars: * Free Shipping is available to the continental United States only. potato leafhopper, Lace Bugs: Leaf Sucking on leaves, twigs, stems, flowers, buds, and petioles. first active early August. In light infestations, damage may appear as defoliation on needles of individual branches or shoots. Treat when aphids are numerous. Second How dry does the soil have to be when applying 12 Month Tree&Shrub Protect and Feed? If suggestions in this publication differ from Populations of this insect can fluctuate from year to year. scale) Native Elm Bark Beetle Control pine bark adelgid, Scolyid Borers: Inject/drench into soil when damage is first noticed, they become numerous. tephrytid stem galls sawfly, Scales: Leaf Sucking Eastern spruce gall, Cynipid Galls Recently, several commonly used insecticides for the control of How tall is Green Gorilla ProLine Vi Pro System? MDA. Sawflies are stingless wasps whose larvae are plant feeders. second generation is less damaging and less important to Testimonials, Protect your home from the most common perimeter pests, Customized program based on your location and home size, Take the guesswork out of preventing weeds and disease in your lawn, Customized to your location, grass type, and lawn size. It is up to the applicator to ensure (induced by adelgids, cynipid wasps, eriophyid mites, gall Feeding, Leaf Pest description and damage Mature birch sawfly larvae are yellowish with rows of black spots along the abdomen and 0.75 inch long.

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