2008 Plant Health Care Reports
The Morton Arboretum's Plant Health Care (PHC) reports are posted bi-weekly during April and August and weekly from May through July. Each report summarizes current tree disease and insect sightings for northeastern Illinois. The reports also include images, growing degree days and phenological indicators. Periodic feature articles offer more detailed perspectives on a range of PHC topics.
Bagworms, Gypsy Moth Egg Masses, Zimmerman Pine Moth, Periodic Cicada Damage, Oak Wilt Advisory, Vole, Rabbit, Deer and Salt Damage.
Feature Article: "The Importance of Indicator Plants and How to Use them", by Trica Barron
European Pine Sawfly, Volutella blight, Witches' Broom of Hackberry, Dothistroma needle blight, Cytospora canker on spruce, Seasonal Needle drop.
Feature Article" "So what are degree days and why do we care about them anyway?", by Donna Danielson, M.S.
Oystershell scale, Hemlock needleminer, Larch casebearer, European Pine Sawfly, Woolly Alder Aphid, European Elm Flea Weevil, Hemlock Rust Mite, Arborviae Leafminer, Phomopsis gall on Forsythia, Black Knot, Apple Scab.
Ash Plant Bug, Honey Locust plant bug, Boxwood psyllid, Pine Bark Adelgid, Spittle bug, Eastern Tent Caterpillar, Spindle leaf gall, Elm Bark Beetle, Cedar Rust, Frost Cracks
Cankerworm, Euonymus webworm, Alder Leafminers, Aphids, Spiny witch-hazel aphids, Maple Bladder gall, Elm leafminer adults, Leafroller, Oak anthracnose, Wetwood.
Feature Article: "Hydrangeas For The Garden", by Trica Barron
Gypsy moth, Spruce Spider Mite, Slugs, Leafhoppers, Caterpillars and sawfly larvae, Linden Looper, Oak Leaftier, Copper Underwing, Wooly fold gall on Oak, Globular Hickory Leaf gall, Oak apple gall, Galls on Linden, Oak leaf blister, Rhizosphaera, Squirrel damage, Downy mildew.
Bronze Birch Borer, Ash/Lilac borer, Oblique banded leaf roller, Marginal Leaf Fold Gall, Ash Anthracnose, Anthracnose on Sycamore, Frogeye Leaf Spot, Butternut Canker, EAB Trap Tree.
Hawthorn Leafminer, Azalea Sawfly, Wooly Larch Adelgids, Bristly Rose Slug Sawfly, Pine Needle Scale, Imported Willow Leaf Beetle, Maple Petiole Borer, Dogwood Sawfly, Dutch Elm Disease, Fire Blight, Apple Scab, Powdery Mildew, Cedar Quince Rust on Hawthorn, Rose Rosette Disease.
Black Vine Weevil Damage, Bagworm, Elm Leafminer update, Euonymus scale, Four-lined plant bug, Oak shothole leafminer, Balsam twig aphid, Lady bird beetle larva, Oak Bullet Gall, Black spot on Elm, Peach Leaf Curl, Chlorosis, Oak Leaf Tatter
Rose curculio, European elm scale, Lecanium scale, Currant spanworm, Spiny witch-hazel gall aphid, Birch leaf miner, Hackberry nipple gall, Gypsy moth update, Pear leaf blister mite damage, The half-wing caterpillar, Verticillium Wilt, Downy leaf spot, Rose rust, Island Chlorosis, Dog vomit slime mold.
White-marked tussock moth, Earwig, Twig pruner, Smartweed caterpillar, Gouty vein gall on maple, Oak pea gall, Brown stink bug, Fireflies, Cedar apple rust, Black spot on rose, Spot anthracnose, Rose midge, Thrips.
Japanese beetle, Viburnum crown borer, Magnolia Scale, Aesculus Leafminer, Azalea bark scale, Pipevine swallowtail caterpillar, Pine false webworm, Hedgehog gall, Maple anthracnose, Guignardia leaf blotch
Redbud leaffolder, Columbine leaf miner, Cypress twig gall, Promethea moth catepillar, Oak Wilt, Sooty Mold.
Basswood lacebug, Ailanthus webworm, Potato leafhoppers, Gypsy moth update, Diplodia Tip Blight, Bacterial leaf spot on ivy, Rust on Mayapple, Bee Balm and Goldenrod, Hosta virus X, Daylily leaf streak.
Peachtree borer, Ash leaf curl aphid, Fruittree leafroller, Annual cicada, White-dotted prominent caterpillar, Pine wilt, Septoria leaf spot, Two-spotted spider mite.
Feature Article: "Where Are All The Bumble Bees?", by Trica Barron.
Honeysuckle aphids, Solitary oak leafminer, Sycamore lace bug, Bald cypress rust mites, Milkweed bugs, Black banded woolly bear caterpillar, Cercospora leaf spot, Tar spot of maple, Oak leaf scorch, Remontant flowers.
Fall Webworm, Sycamore tussock moth caterpillar, Mossy rose galls, Birch catkin feeders, Red Milkweed beetle, Grapevine beetle, Bortyosphaeria canker, Bacterial leaf spot on tulip tree.
Feature Article: "Hedges", by Trica Barron
Milkweed tussock moth, American dagger moth, Southern oak dagger moth, Yellow bear caterpillar, Katydid, Soldier beetle, Hummingbird clearwing moths, Smooth patch, Measles on Peony, Lily-of-the-Valley anthracnose, Septoria leaf spot, Volutella on boxwood.
Feature Article: "Illinois Maple: A Special Blend", by Dr. Thomas Green, Ph.D. and Dr. George Ware. Ph.D.
- 2007 Plant Health Care Reports 100%
The Morton Arboretum's Plant Health Care (PHC) reports are posted bi-weekly during April and August and weekly from May through July. Each report summarizes current tree disease and insect sightings for northeastern Illinois. The reports also...
- 1999 Plant Health Care Reports 100%
5-28-1999 - Issue 1 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,...
- 2000 Plant Health Care Reports 100%
3-30-2000 - Issue 1 Hemlock rust mites, Larch casebearers, Arborvitae leafminers, European pine sawfly eggs, Cedar-apple rust and Cedar-hawthorn rust, and Black knot Feature article: "So what are degree days and why do we care about them anyway?"...