The Morton Arb

Articles in category: Plant Health Care Reports

• August 28, 2010

  Published in fall webworm, sycamore lacebug, Volutella stem and leaf blight, Oak Wilt, 2010 weather summary
  This issue contains details on many items including: fall webworm, sycamore lacebug, Volutella stem and leaf blight, oak wilt, 2010 weather summaryWoody of the Week: Hardy kiwi (Actinida kolomikta)Article: An ounce of prevention in the autumnClick...

• August 13, 2010

  Published in annual cicada, red milkweed beetle, yellow-necked caterpillars, black vine weevil damage, imported willow leaf beetle, milkweed tussock moth, peach tree borer, ash flower gall, cytospora canker, phytoplasma, American hornbeam (Carpinus caroliniana)
  This issue contains details on many items including: annual cicada, red milkweed beetle, yellow-necked caterpillars, black vine weevil damage, imported willow leaf beetle, milkweed tussock moth, peach tree borer, ash flower gall, cytospora canker,...

• July 30, 2010

  Published in Aesculus twig pruner, pipevine swallowtail caterpillar, Zimmerman pine moth update, birch catkin feeders, sycamore tussock moth caterpillars, walnut anthracnose, tar spot, Melampsora rust, leaf blotch on linden, dodder
  This issue contains details on many items including Aesculus twig pruner, pipevine swallowtail caterpillar, Zimmerman pine moth update, birch catkin feeders, sycamore tussock moth caterpillars, walnut anthracnose, tar spot, Melampsora rust, leaf...

• July 16, 2010

  Published in Kalm St. John’s Wort (Hypericum kalmianum), Septoria leaf spot, Lily of the valley anthracnose, Leafcutter bee, Jumping oak gall, Solitary oak leafminer, Two-spotted spider mite, Azalea bark scale
  This issue contains details on many items including: Azalea bark scale, two-spotted spider mite, solitary oak leafminer, jumping oak gall, leafcutter bee, lily of the valley anthracnose, Septoria leaf spotWoody of the week: Kalm St. John's Wort...

• July 9, 2010

  Published in Gypsy moth update, wooly larch adelgids, nectria canker, sooty mold, Pseudocercospora fuliginoa, Botryosphaeria canker, Common trumpt creeper (Campsis radicans), Botrytis cinerea (grey mold)
  This issue contains details on many items including gypsy moth update, wooly larch adelgids, nectria canker, sooty mold, Pseudocercospora fuliginoa, and Botryosphaeria cankerWoody of the week: Common trumpt creeper (Campsis radicans)Fungus of the...

• July 2, 2010

  Published in magnolia scale, leafminers on maple, Phyllosticta leaf spot, measles on peony, pine needle rust on goldenrod, rust on mayapple, Black Knot, Common persimmon (Diospyros virginiana), Daldinia concentrica
  This issue includes details on many items including: Magnolia scale, leafminers on maple, Phyllosticta leaf spot, measles on peony, pine needle rust on goldenrod, rust on mayapple, and black knotWoody of the Week: Common persimmon (Diospyros...

• June 25, 2010

  Published in Rose curculio, Japanese beetle, Gypsy moth update, hedgehog gall, thyronectria canker, Rose rust, Guignardia leaf blotch, diplodia tip blight, Brown rot of stone fruit-update, remontant flowers, Nikko Maple (Acer maximowiczianum formerly A. niko, Coral fungi (Family Clavariaceae)
  This issue contains details on many items including Rose curculio, Japanese beetle, Gypsy moth update,  Hedgehog gall, Thyronectria Canker, Rose rust, Guignardia leaf blotch, Diplodia Tip Blight, Brown rot of stone fruit-update, Remontant...

• June 18, 2010

  Published in gouty vein gall, half-wing caterpillar feeding damage, Cynipid wasp gall, mountain-ash sawfly, black spot of elm, mosaic virus on katsura, hollyhock rust, Cercospora leaf spot, Mutinus caninus
  This issue contains details on many items including: gouty vein gall, half-wing caterpillar feeding damage, Cynipid wasp gall, mountain-ash sawfly, black spot of elm, mosaic virus on katsura, hollyhock rust, Cercospora leaf spot.Fungus of the Week:...

• June 11, 2010

  Published in spiny elm caterpillar, earwigs, pine needle scale crawlers, larch sawfly, Pear slug sawfly, sumac leaf beetle, white-marked tussock moth, Rose midge, Powdery mildew, cedar quince rust on crabappke, cedar hawthorn rust on hawthorn, Fuligo septic, Magnolia virginiana
  This issue contains details on mnay items including: spiny elm caterpillar, earwigs, pine needle scale crawlers, larch sawfly, pear slug sawfly, sumac leaf beetle, white-marked tussock moth, rose midge, powdery mildew, cedar quince rust on...

• June 4, 2010

  Published in Hawthorn leafminer, ailanthus webworm, cottony maple scale, Oak bullet gall, spindle gall, Pine false webworm, downy leaf spot, Chlorosis
  This issue contains details on many items including: hawthorn leafminer, Ailanthus webworm, cottony maple scale, oak bullet gall, froghoppers, pine bark adelgid, spindle gall, pine false webworm, oak leafroller, downy leaf spot, chlorosis, and...

• May 28, 2010

  Published in Linden looper, Azalea sawfly, vibernum crown borer, holly leafminer European alder leafminer, bristly rose slug sawfly, spiny witch-hazel aphid on river birch, sycamore anthracnose, Apple Scab, frogeye leafspot, Xylaria polymorpha, Pagoda dogwood, Cornus alternifolia
  This issue contains details on many items including: Linden looper, azalea sawfly, vibernum crown borer, holly leafminer European alder leafminer, bristly rose slug sawfly, spiny witch-hazel aphid on river birch, sycamore anthracnose, apple scab,...

• May 21, 2010

  Published in Calico scale, Terrapin scale, Hackberry nipple gall, Phylloxera gall, Imported canker worm, Polyporus squamosus, Kolkwitzia amabilis, Ash/lilac borer, Daylily leaf streak, Dutch elm disease, Emerald Ash Borer, peach leaf curl, phomopsis gall on forsythia
  This issues contains details on many items including: early emerald ash borer, ash/lilac borer, hackberry nipple gall, Phylloxera gall, imported currant worm, calico scale, terrapin scale, daylily leaf streak, Dutch elm disease, Phomopsis gall on...

• May 14, 2010

  Published in frost damage, yellow morel, Cankerworms, cedar-apple rust, Cedar-hawthorn rust on hawthorn, Cedar-quince rust, Elm bark beetle, Fletcher scale, four-lined plant bug, galls, Leafroller on hawthorn, Slugs, Spruce spider mite, tar spot of maple
  This issue contains details on many items including: Fletcher scale, spruce spider mite, elm bark beetle, four-lined plant bug, spring and fall cankerworms, galls, slugs, leafroller, un-identified rose caterpillar, cedar rust telial horns, tarspot...

• May 7, 2010

  Published in European pine sawfly, Euonymus webworm, Elm leafminer, Schizophyllum commune, Maple anthracnose, Oak anthracnose, Black spot on rose, Rose rosette disease, Phomopsis tip blight, Powdery mildew, peach leaf curl, oak leaf blister, Bronze birch borer, Erineum gall, Euopean fruit Lecanium scale, Wooly alder aphid, Hemlock needle miner, Spittle bug
  This issue contains details on many items including: euonymus webworm, European pine sawfly, elm leafminer, spittle bug, hemlock needle miner, wooly alder aphid, Euopean fruit Lecanium scale, erineum gall, bronze birch borer, oak leaf blister,...

• April 30, 2010 Plant Health Care Report

  Published in Lichen, Ash anthracnose, Ash plant bug, boxwod psyllid, Cedar-quince rust, Crown rust on buckthorn, elm flea, Gypsy Moth, Honey Locust Plant Bug, Larch casebearer, Oak apple gall, Pestalotiopsis blight
  This issue contains details on many items including: European elm flea weevil, oak apple gall, maple bladder gall, larch casebarer, ash plant bug, boxwood psyllids, honeylocust plant bug, gypsy moth, crown rust of buckthorn, cedar quince rust,...

• April 16, 2010 Plant Health Care Report

  Published in Cryptodiaporthe canker, rusts, Verticillium Wilt, needleminer, rust mite, Eastern tent caterpillar, Euonymus scale
  This issue includes: euonymus scale on daphne, eastern tent caterpillar on cotoneaster, hemlock rust mite, spruce needleminer, Verticillium wilt on magnolia, cedar apple and hawthorn rusts, Cryptodiaporthe canker on dogwood, management and fungus of...

• April 2, 2010 Plant Health Care Report

  Published in brown rot, BAGWORMS, gypsy moths, dothistroma, vole, rabbit, deer, winter damage, salt damage, Juniper webworm
  This issue includes information on many items including: Bagworms, Gypsy moth egg masses, Juniper webworm, Brown rot of stone fruit, Dothistroma needle blight, Vole, Rabbit, Deer, Winter, and Salt damage.  The feature article is So what are degree...

• Fertilizing Trees and Shrubs in Accordance with the New ANSI A300 Standard

  Fertilizing Trees and Shrubs in Accordance with the New ANSI A300 StandardThomas HanzelyResearch AssistantSoil Characterization Laboratory The purpose of the American National Standards Institute (ANSI) A300 standard is to provide a basis for...

• Determining the Health of Your Soil

  Determining the Health of Your SoilBy Daniel ThorpePlant Pathology InternThe Morton Arboretum Soil is the foundation to plant sustainability in the landscape. Unfortunately, the importance of soil to plant health is often overlooked because our...

• Deep Roots Are Harming Trees

  Deep Roots Are Harming TreesBy Gary Watson Deep or buried root systems have been causing problems for arborists for decades. Though it is often referred to as "planting too deep," the cause of buried root systems is not limited to the planting...

• The Challenge for Increasing Rainfall Infiltration in Urban Landscapes

  The Challenge for Increasing Rainfall Infiltration in Urban LandscapesBy George Ware, Ph.D.Dendrologist EmeritusThe Morton Arboretum Established home landscapes offer opportunities for changes that increase rainfall interception and absorption for...

• So what are degree days and why do we care about them anyway?

  So what are degree days and why do we care about them anyway?By Donna Danielson, M.S.Plant Clinic AssistantThe Morton Arboretum We list the growing degree days we've accumulated at The Arboretum, The Chicago Botanic Garden, and other sites around...

• The Importance of Indicator Plants and How to Use Them

  The Importance of Indicator Plants and How to Use ThemBy Trica BarronPlant Health Care Technician At the beginning of our Plant Health Care Report we always denote what indicator plant is in bloom at the arboretum. So you may be wondering what is...

• Handy Tools for Scouting

  Handy Tools for ScoutingBy Donna Danielson, M.S.Plant Clinic Assistant One way to keep your landscape healthy is to scout regularly, looking for problems. If caught early, insect and disease damage can frequently be minimized. We've made a list...

• Coping with Clayey Soils

  Coping with Clayey SoilsBy Katrina Lewin, Horticulturist, The Morton Arboretum Soil is a major consideration when choosing plants. Soil consists of inorganic (weathered rock and minerals) and organic (decomposed plant and animal matter) materials...

• ANNUAL WHITE GRUBS ARE EARLY THIS YEAR!

  ANNUAL WHITE GRUBS ARE EARLY THIS YEAR!Fredric Miller, Ph.D. Extension EntomologistUniversity of IllinoisCountryside Extension CenterCountryside, IL 60525 Peak emergence of adult southern masked chafers, the adult stage of the annual white grub,...

• New Plants At The Arboretum

  New Plants At The ArboretumBy Tim Boland, M.S.Curator of Horticultural CollectionsThe Morton Arboretum The renovation of the landscape at the Administration Building and Special Collections Library provided an excellent opportunity to diversify our...

• Looking for Treasure on the Arboretum's West Side

  Looking for Treasure on the Arboretum's West SideBy Joseph KrolHorticulturistThe Morton Arboretum Where can you find the witch-alder, or how about a magnificent specimen of Korean mountain ash, or a majestic Oglethorpe oak? You might have to travel...

• Everything You Always Wanted To Know About The Sterling Morton Library But Were Afraid To Ask

  Everything You Always Wanted To Know About The Sterling Morton Library But Were Afraid To AskBy Rita M. HassertTechnical Service LibrarianThe Morton Arboretum Libraries can be surprising places! All that is gold does not glitter, Not all those who...

• August 28, 2009 Plant Health Care Report

  Published in butternut canker, An Ounce of Prevention in the Autumn, bullseye leaf spot, common ragweed, Emerald Ash Borer, milkweed tussock moth, Pestalotiopsis blight, phomopsis on Douglas fir, smooth patch, soldier beetle, stinkhorns, yellow-necked caterpillars
  This issue contains details on:emerald ash borer, yellow-necked caterpillar, milkweed tussock moth, soldier beetle, Phomopsis on Douglas fir, butternut canker, Pestalotiopsis blight, bullseye leaf spot, smooth patch, stinkhorns,common ragweed,An...

• August 14, 2009 Plant Health Care Report

  Published in construction damage, teasel, dodder, dog vomit slime mold, Botrytis, Melampsora rust, tar spot of maple, linden leaf spot, bluegrass rust, Stigmina on spruce, honeysuckle aphids, fall webworm, milkweed bugs, sycamore tussock moth
  This issue contains details on:sycamore tussock moth, milkweed bugs, fall webworm, honeysuckle aphids, Stigmina on spruce, bluegrass rust, linden leaf spot, tar spot of maple, Melampsora rust, Botrytis, dog vomit slime mold, dodder,teasel, Taking...

• July 31, 2009 Plant Health Care Report

  Published in birds-foot trefoil, new education brochure, leaf drop due to dry weather, Septoria leaf spot on dogwood, lily-of-the-valley anthracnose, thyronectria canker, measles on peony, hummingbird clearwing moth, galls on fragrant sumac, cicadas
  This issue contains details on: dog day cicadas, galls on fragrant sumac, hummingbird clearwing moth, measles on peony, thyronectria canker, lily-of-the-valley anthracnose, Septoria leaf spot on dogwood, leaf drop due to dry weather, new education...

• July 24, 2009 Plant Health Care Report

  Published in purslane, new disease book, herbicide damage, monarda rust, basal rot, yellowwood anthracnose, phomopsis gall on forsythia, phomopsis tip blight on juniper, Lopidea staphyleae, solitary oak leafminers, scarlet oak awflies, two-spotted spider mites, peach tree adults, gypsy moth adults
  This issue contains details on the following: gypsy moth adults, peach tree borers, two-spotted spider mites, scarlet oak sawflies, solitary oak leafminers, Lopidea staphyleae, Phomopsis tip blight on juniper, Phomopsis gall on forsythia, yellowwood...

• July 17, 2009 Plant Health Care Report

  Published in pokeweed, remontant flowers, goldenrod rust, purple eye leaf spot, volutella leaf and stem blight, boxwood leafminer damage, boxwood mites, two-marked tree hoppers, cypress twig galls
  This issue contains details about: cypress twig galls, two-marked tree hoppers, boxwood mites, boxwood leafminer damage, volutella leaf and stem blight on boxwood, purple eye leaf spot, goldenrod rust, remontant flowers, pokeweed (Phytolacca...

• July 10, 2009 Plant Health Care Report

  Published in Tilia lacebug, oblique-banded leafroller, twig girdler, ailanthus webworm, Europoean elm scale, red milkweed beetle, sumac leaf beetle, Botryosphaeria canker, mayapple rust, common lamb's-quarters
  This issue contains details on:Tilia lacebug, oblique-banded leafroller, twig girdler and pruner, ailanthus webworm, European elm scale, red milkweed beetle, sumac leaf beetle, Botryosphaeria canker, mayapple rust, and common...

• July 4, 2009 Plant Health Care Report

  Published in Japanese beetles, magnolia scale, earwigs, cottony maple scale, leafhoppers, redbud leaffolder, honeysuckle blight, azalea gall, guignardia, viburnum leaf beetle, poison ivy
  This issue contains details on items including: Japanese beetles, magnolia scale, earwigs, cottony maple scale, leafhoppers, redbud leaffolder, honeysuckle blight, azalea gall, Guignardia, Sightings elsewhere: Viburnum leaf beetle, poison...

• June 26, 2009 Plant Health Care Report

  Published in pennycress, wild carrot, Chlorosis, diplodia tip blight, Oak Wilt, Dutch elm disease, fireflies, six-spotted tiger beetle, hedgehog gall, pear leaf blister mite, viburnum crown borer, BAGWORMS
  This issue contains details on many items including: bagworms, viburnum crown borer, pear leaf blister mite, hedgehog gall, six-spotted tiger beetle, fireflies, Dutch elm disease, oak wilt, Diplodia tip blight, chlorosis, wild carrot,...

• June 19,2009 Plant Health Care Report

  Published in Rose midge, Woolly larch adelgid, Aesculus leafminer, Pine false webworm, Oak bullet gall, Spot anthracnose, Rose rust, Island chlorosis, Septoria leaf spot, Field bindweed, Curly dock, Black Vine Weevil
  This issue contains details on many items including:Black vine weevil damageRose midgeWoolly larch adelgidAesculus leafminerPine false webwormRose rustIsland chlorosisSeptoria leaf spotField bindweedCurly dockDownload the report to pdf

• June 12,2009 Plant Health Care Report

  Published in Pear slug sawfly, Currant spanworm, Black medic, Creeping Charlie, Black spot on rose, Powdery mildew, Erineum patch gall on beech, Lady bird beetle larva, Balsam twig aphid, Oak shothole leafminer
  This issue contains details on many items including:Currant spanwormPear slug sawflyBalsam twig aphidOak shothole leafminerLady bird beetle larvaErineum patch gall on beechPowdery mildewBlack spot on roseCreeping CharlieBlack medicDownload the...

• June 5, 2009 Plant Health Care Report

  Published in Ash/lilac borer, Elm leafminer, Hawthorn leafminer, Azalea bark scale, Oak leaftier, Redbanded leafroller, Beech blight aphid, Hackberry nipple gall, Cedar-quince rust, Cedar-hawthorn rust on hawthorn, Phomopsis canker on kerria, Daylily leaf streak, Wetwood, Yellow woodsorrel, broadleaf plantain, Alder leafminer, elm flea
  This issue contains details on many items including:Ash/lilac borerAlder leafminerElm leafminerEuropean elm flea weevil updateHawthorn leafminerAzalea bark scaleOak leaftierRedbanded leafrollerBeech blight aphidHackberry nipple gallCedar-quince...

• May 29, 2009 Plant Health Care Report

  Published in downy leaf spot, cedar-apple rust, frog-eye leaf spot, sycamore anthracnose, oak leaf blister, peach leaf curl, Apple Scab, imported willow leaf beetle, bristly roseslug sawfly, ash flower gall, boxwod psyllid, four-lined plant bug
  This report contains four-lined plant bug, boxwod psyllid, ash flower gall, bristly roseslug sawfly, imported willow leaf beetle, apple scab, peach leaf curl, oak leaf blister, sycamore anthracnose, frog-eye leaf spot, cedar-apple rust, and downy...

• May 22, 2009 Plant Health Care Report

  Published in Apple Scab, Bull thistle, Garlic mustard, Crown rust on buckthorn, Hosta virus X, Oak anthracnose, Maple anthracnose, Rose rosette, Fire Blight, Eriophyid mite gall on prunus, Leafroller on hawthorn, Maple bladder gall, Oak apple gall, Columbine leafminer, Slugs, Pine needle scale, Euonymus scale, Cankerworm, Azalea sawfly, Honey Locust Plant Bug, Aphids
  This issue contains details on many items including:Aphids Honey locust plant bug Azalea sawfly Cankerworm Euonymus scalePine needle scaleSlugsColumbine leafminerOak apple gallMaple bladder gallEriophyid mite gall on prunusFire blightRose...

• May 15, 2009 Plant health Care Report

  Published in Aphids, Wild violet, Corn speedwell, Squirrel damage, Ash anthracnose, Spittle bug, Erineum gall on Linden, Alder leafminer, Spiny witch hazel gall aphid, Spruce spider mite, Ash plant bug, Euonymus webworm, Elm bark beetle
  This issue contains details on many items including:Elm bark beetleEuonymus webwormAsh plant bugSpruce spider miteSpiny witch hazel gall aphidAlder leafminerErineum gall on LindenSpittle bugAsh anthracnoseSquirrel damageCorn speedwellWild...

• May 8, 2009 Plant Health Care Report

  Published in Tulip fire, Cedar rusts, Henbit, Shepherd’s purse, Spruce needleminer, Juniper webworm, weevil, Gypsy moth, elm flea
  This issue contains details on many items including: Gypsy mothEuropean elm flea weevilJuniper webwormSpruce needleminerShepherd’s purseHenbitCedar rustsTulip fire Download the May 8, 2009 Report Here- (PDF format)

• May 1, 2009 Plant Health Care Report

  Published in sawfly larvae, Apple Scab, European pine sawfly, Eastern tent caterpillar, Oystershell scale, Cryptodiaporthe canker, golden canker, seasonal needle drop, Dandelion, Arborvitae leafminer, White clover, Caterpillars
  This issue contains details on many items including: Caterpillars and sawfly larvae Eastern tent caterpillar European pine sawfly Arborvitae leafminer Oystershell scale Apple scab Cryptodiaporthe canker (golden canker) Seasonal needle drop...

• April 17, 2009 Plant Health Care Report

  Published in Woolly alder aphid, Volutella stem and leaf blight, Larch casebearer, Rhizosphaera, Aphids, Cytospora canker of spruce, Hemlock rust mite, Larch casebaerer, Lophodermium, spiny rose gall
  This issue contains details on many items including: Hemlock rust miteWoolly alder aphidLarch casebearerSpiny rose gallLophodermiumRhizosphaeraVolutella stem and leaf blightCytospora canker of spruceBlack knot DOWNLOAD THE APRIL 17, 2009 REPORT...

• April 3, 2009 Plant Health Care Report

  Published in BAGWORMS, winter damage, voles, salt, rabbits, plant health care, pine bark adelgids, PHC, Oak Wilt, hemlock needleminers, gypsy moths, dothistroma, deer, April, witches broom of hackberry
    Plant Health Care Report from April 3, 2009. Topics include: rabbits,   Download the report- (PDF)

• 2007 Plant Health Care Reports

  Published in tree disease, phenological indicators, insect sightings
  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...

• 2008 Plant Health Care Reports

  Published in tree disease, insect sightings, phenological indicators
  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...