1999 Plant Health Care Reports
Tagged as: tree disease, phenological indicators, insect sightings
Ascochyta blight on lilac, Maple Anthracnose, Alder leafminer, Cooley’s Spruce Gall Adelgid, European pine sawfly larvae, Cedar-hawthorn rust on hawthorns, Nipple gall, Lilac/ash borers, Willow twig canker, Peachtree borer, Coryneum canker, Aphids, Erineum gall mites, and algal leaf spots
Anthracnose, Taphrina leaf curl, Phyllosticta leaf spot on maple, Spiny elm caterpillars, Sooty mold, Two marked treehoppers, Leaf beetle larvae, Guignardia leaf blotch of horse chestnut, Black rot of grapevine, Thrips, Thyronectria canker, Lecanium scale, Oystershell scale, Sawfly, Adelgids on larch, Black spot of elm, Black vine weevils, Hawthorn leafminer, Sphaeropsis tip blight, and Dutch Elm Disease
Witches’ broom on hackberry, Oak slug sawfly, Downy leaf spot or white mold, Leaf blight of witch hazel, Ash plant bug, Pecan cigar casebearer, Cedar-quince rust, and Oak shothole leafminers
Aphids, Fruitworm, Powdery mildew, Botryodiplodia canker, Anthracnose on lilac, Guignardia, Sod webworm, bronze birch borer, serviceberry canker, chlorosis, anthracnose
Featured article: "Elm Yellows outbreak in the Chicago area" by Karel A. Jacobs, Ph.D.
Sod webworm, Southern masked chafers, Pipevine swallowtail larvae, Mossyrose galls, Lace bug, Verticillium, Cercospora leaf spot, and Black spot of rose
Japanese beetles, Southern masked chafers, Genista caterpillars, Earwigs, Solitary oak leafminer, Ash/lilac borers, Peachtree borers, Melampsora rust, Mosaic on hackberry, Chlorosis on pin oak, Phomopsis tip blight on juniper, and scorch on maples
Gypsy moth adults, White-marked tussock moth larva, Second generation of alder leafminer, Tiger swallowtail larvae, Dusky birch sawfly, Botryosphaeria canker, Oak wilt, carpenter ants, and Asian Long-Horned Beetles
Feature article: "JAPANESE BEETLES ARE HERE!" by Fredric Miller, Ph.D.
Japanese beetles, Ash/lilac and peachtree borers, Gypsy moth, Bacterial leaf spot, Rose rosette, Bullseye leaf spot (Cristulariella), anthracnose disease on maples, Phomopsis on junipers, and yellowing leaves
Feature article: "ANNUAL WHITE GRUBS ARE EARLY THIS YEAR!" by Fredric Miller, Ph.D.
Fall webworm, Japanese beetles, Gypsy moth, Two-marked treehoppers, Peachtree borers, Pine wilt, Cedar-apple rust and cedar-quince rust, Powdery mildew, and heat-related problems
Spider mites, Anthracnose, Leaf spot of filbert, Ascochyta blight on coneflower, Leaf blotch of linden, scorch, and Dodder
Baldcypress rust mites, Septoria leaf spot on dogwood, Cercospora leaf spot, and Sphaeropsis
Ailanthus webworm, Genista caterpillars, and Sphaeropsis tip blight on Douglas-fir
Locust borers, Elm bark beetles, Phaeocryptopus nudus, yellowing leaves, early needle drop, carpenter ants, and Fusarium
Goldenrod soldier beetle, Septoria canker, Coral spot (Nectria canker), Cladosporium leaf blotch on peony, and Sapsucker damage
Leaf beetle larvae, Tar spot of maple, and Armillaria root rot (shoestring root rot)
Feature article: "Changing Procedures in Urban Tree Planting and Management" by Dr. George Ware
Cottonwood leaf beetle larvae, Cypress twig galls, Woolly alder aphids, and winter tree care
Feature article: "Dormancy and cold hardiness in temperate woody plants" by Abbas Shirazi, Ph.D.
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