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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