4oiGIFNEIEJJVCBEZXRlY3Rpb24=
Tree Pest Alerts | South Dakota Department of Agriculture

Tree Pest Alerts

2017 Alerts

  • May 24, 2017
    • Plant Development
    • Treatments to do now
      • Bronze birch borer
      • Cedar-apple rust
      • Codling moth
      • Pine needle scale
      • Needlecast diseases of spruce
    • Timely topic
      • Spruce desiccation injury
      • North Dakota elm dying on Capitol Hill
    • E-samples
      • Ash anthracnose
      • Redheaded or banded ash borer
      • Engraver beetles in the Black Hills
      • Erineum mite on linden
      • Nightshade in trees
      • Peach of a problem
  • May 17, 2017
    • Plant Development
    • Treatments to do now
      • Bronze birch borer
      • Cedar-apple rust
      • Codling moth
      • Pine needle scale
      • Needlecast diseases of spruce
    • Timely topic
      • Frost damage on ash
      • Ash anthracnose
      • Tent caterpillars on the move
      • Pollination requirements for fruit trees
    • E-samples
      • Male cones on spruce
    May 10,2017
    • Plant Development
    • Treatments to do now
      • Second apple scab treatment
      • Clearwing ash borer
      • Diplodia tip blight
      • Needlecast diseases of spruce
    • Treatments to do soon
      • Pine needle scale
    • Timely topics
      • Emerald ash borer update
      • Irrigation requirements for seedlings
      • Irrigation water quality
    • E-samples
      • Ash flower galls are dropping
      • Tent caterpillars
  • May 3, 2017
    • Plant Development
    • Treatments to do now
      • Clearwing ash borer
    • Treatments to do soon
      • Diplodia tip blight
      • Needlecast diseases of spruce
    • Timely topic
      • Late April snow and cold injury
      • Red leaves on maple
    • E-samples
      • Alcohol flux
      • Deer browsing on pines
      • Woodpecker injury on oaks
  • April 26, 2017
    • Plant Development
    • Treatments to do now
      • Pine engraver beetle
      • Spruce Spider mite
      • Zimmerman pine moth
    • Treatments to do soon
      • Clearwing ash borer
    • Timely topics
      • Tree pollen problems
      • It's time for morels
      • An update to the sweating bare-root nursery stock article
  • April 19, 2017
    • Plant Development
    • Treatments to do soon
      • Pine engraver beetle
      • Spruce spider mite
      • Zimmerman pine moth
    • Timely topic
      • Emerald ash borer update
      • Planting (and sweating) bare-root trees
  • April 12, 2017
    • Plant development
    • Treatments to do soon
      • Apple scab and cedar-apple rust fungicide applications
        • And some trees that are not susceptible to the disease
      • Tent caterpillar egg mass removal
      • Zimmerman pine moth
      • Pine engraver beetle
    • Timely topics
      • Horses and cherry trees: a bad combination
      • Buying bare-root stock to plant now: be cautious!
  • March 29, 2017
    • Plant Development
    • Treatments to do soon
      • Apple scab and cedar-apple rust fungicide applications
      • Tent caterpillar egg mass removal
    • Timely Topic
      • What to do about a stump
    • E-samples
      • Black knot
      • Sawyer beetles and pine wilt
  • March 15, 2017
    • Timely Topics
      • Our temperature roller coaster and tree injury
      • Oh Deer and Meyer spruce
    • E-samples
      • Pine needle scale and mugo pine
      • Clearwing ash borer
  • March 1, 2017
    • Timely Topics
      • How to germinate acorns?
      • What is coming out of my stored firewood?
    • E-samples
      • Ponderosa pine shedding bark – it’s closer to sugar time!
      • Red ring rot in white spruce
  • February 16, 2017
    • Timely Topics
      • What about winter watering?
      • Will this warm weather hurt trees?
    • E-samples
      • Flies crawling on mpale trees
      • Possible pine wilt disease
  • February 1, 2017
    • Timely Topics
      • Is my tree worth anything?
      • Can we begin pruning soon?
      • Maples are starting to "bleed"
    • E-samples
      • Pear scab
      • Tree identification
      • Timely Topics
        • Winter Watering
        • Some cherries to consider for spring planting
      • E-samples
        • Squirrels chewing tree trunks
        • Black knot on cherry
    • January 4, 2017
      • Timely Topics
        • My Christmas Tree is Growing
      • E-samples
        • Pines Turning Color

    2016 Alerts

    • December 14, 2016
      • Timely Topics
        • Selecting firewood
      • E-samples
        • Pine wilt disease
    • November 30, 2016
      • Timely Topics
        • Frost cankers and cracks, does wrapping help?
      • E-samples
        • Twigs falling from a coffee tree
        • Small holes in pine bark
    • November 16, 2016
      • Timely Topics
        • Picking out the perfect Christmas tree
        • Snow bending tree branches
        • Ice melt products and plants
      • E-samples
        • Junipers turning color
    • November 2, 2016
      • Timely Topics
        • Warm autumns and the problem for trees
        • The mountain pine beetle epidemic is ending
      • E-Samples
        • Spider webs appearing on lawns and trees
        • Zimmerman pine moth
    • October 19, 2016
      • Timely Topics
        • Fall color on arborvitae
        • Late frost allowing great fall color to occur
        • Woolly apple aphid
      • E-Samples
        • Chinese mantis
        • Fireblight
        • Pigeon tremex
        • Pine needle scale
        • Turf rust
    • October 5, 2016
      • Timely Topics
        • Acorn flour
        • Multicolored Asian lady beetles
      • E-samples
        • Bleeding canker on cottonwood
        • Spruce gall midge
    • September 28, 2016
      • Timely Topics
        • Pine needles turning yellow too!
        • Planting acorns
      • E-samples
        • Ash seed weevil
        • Willow sawfly
    • September 21, 2016
      • Timely Topics
        • Pine needles turning yellow
        • Verticillium wilt continues
      • E-Samples
        • Cytospora canker on cottonwood
        • Ash flower galls
        • Pear-shaped crabapple
    • September 14, 2016
      • Timely Topics
        • What causes trees to turn color
        • Fall is a good time to plant
      • E-samples
        • Cedar-apple rust
        • Oak rough bullet gall
        • Large Tolype moth
        • Transplant problems
    • September 7, 2016
      • Timely topics
        • Russian-olive wood
        • Walnut anthracnose
        • Transline herbicide and honeylocust
      • E-samples
        • Ash borers
        • Ghost plant
    • August 31, 2016
      • Timely topics
        • Lightning struck tress
        • Bur oak blight
        • Sulphur yellow fungus
        • Verticillium wilt in elms
      • E-samples
        • Willow cone gall
        • Can I eat this?
    • August 24, 2016
      • Timely topics
        • Planting buckeyes and walnuts
        • Verticillium wilt
        • Spring-flowering shrubs blooming
      • E-samples
        • Cottonwood petiole gall
        • Woolly oak gall
    • August 17, 2016
      • Plant development
      • Timely Topics
        • Squirrels and trees
        • What to do about a broken branch
      • E-samples
        • Juniper broom rust
        • Melampsora rust
    • August 10, 2016
      • Plant development
      • Timely Topics
        • Storm-resistant trees
        • Mountain pine beetles are beginning to fly
        • What crabapples are resistant to fireblight?
      • E-samples
        • Bur oak blight
        • Cicada killers
        • Chlorosis
        • Fall webworm
        • Tar spot
    • August 3, 2016
      • Plant development
      • Timely topics
        • Urban Wood Utilization coming soon
        • May I eat these fruits?
      • E-samples
        • Black blister beetles
        • Groundcherries
        • Peat scab
        • Walnut ceterpillar
        • Willow scab
    • July 27, 2016
      • Plant development
      • Timely topics
        • Trees and the current drought
        • Frost damage on spruce
      • E-samples
        • Cotoneaster leaf crumpler
        • Earwigs and pill bugs
        • Ichneumon wasps
        • Leaf blister on maple
        • Pear slugs
        • Spindle gall on plum
    • July 20, 2016
      • Plant development
      • Timely topics
        • Spotted wing drosophila
        • Hackberries are releafing
      • E-samples
        • Cedar-quince rust
        • Codling moth
        • Emerald ash borer look-alikes
        • Maple bladder gall mite
        • Plum pockets
        • Phomopsis canker on Russianolive
        • Root weevils coming in homes
    • July 13, 2016
      • Plant development
      • Timely topics
        • Sucking insects
        • Herbicide injury on trees
        • Eriophyid mites on spruce
      • E-samples
        • Cicadas
        • Leafy bracts on lindens
        • Common chokecherry, not poison sumac
    • July 6, 2016
      • Plant development
      • Timely topics
        • Drought and trees
        • Twigs dropping from cottonwoods
        • Codling moth and apples
      • E-samples
        • Maple bladder gall
        • Hackberry nipple gall
        • Smaller European elm bark beetle
    • June 29, 2016
      • Plant development
      • Tasks to complete in another week
        • Apple maggot
      • Timely Topics
        • What to do about spray-damaged trees
        • Why have the hackberry lost their leaves?
        • Heat stress
        • Woolly aphids on apples and elms
      • E-samples
        • Plum curculio
        • Clearwing ash borer pupae skins
        • Blister beetles
    • June 22, 2016
      • Plant development
      • Tasks to complete in another week
        • Apple maggot
      • Timely topics
        • New emerald ash borer infestations in Nebraska
        • Cottony ash psyllid
        • Chlorosis in trees
      • E-samples
        • Apple scab
        • Amur chokecherry fruit
        • Root weevils
    • June 15, 2016
      • Plant Development
      • Tasks to complete in another week
        • Spruce bud scale
        • Spruce needleminer
      • Timely Topics
        • Emerald ash borer discovered in Omaha, NE
        • Pine wilt disease advancing north
        • Dutch elm disease symptoms are appearing
      • E-samples
        • Forest tent caterpillar
        • Powdery mildew
        • Cedar-apple rust on apple, crabapple and hawthorn
        • Spindle galls
        • Plum pockets
    • June 8, 2016
      • Plant Development
      • Tasks to complete in another week or two
        • Spruce bud scale
        • Spruce needleminer
      • Timely Topics
        • Beetle-geddon (May beetles and June bugs)
        • Juniper tip blight
        • Ash leaf curl
      • E-samples
        • Ash/lilac borer
        • Ash rust
        • Buckeye rust
        • Cereal rust
        • Plum pockets
    • June 1, 2016
      • Plant development
      • Tasks to perform now
        • Bronze birch borer treatments
        • Shearing pines
      • Timely topics
        • Treehoppers
        • Armillaria root disease
        • White pine blister rust
      • E-samples
        • Common buckthorn identification
        • Emerald ash borer (Illinois)
        • Honeylocust borer
        • Flathead appletree borer
        • Male cones on conifers
        • Tent caterpillars
    • May 25, 2016
      • Plant Development
      • Tasks to perform now
        • Cedar-apple rust treatments on apples
        • Codling moth and plum curculio treatments
        • Bronze birch borer treatments
      • Tasks to do in a week or two
        • Shearing pines
      • Timely Topics
        • Frost damage on ash and hackberry trees
        • Ash anthracnose
        • Emerald ash borer has NOT been detected in the state
        • Lecanium scales are producing honeydew
      • E-samples
        • Buckeye blotch
        • Peach leaf curl
        • Weeds - common mallow and field pennycress
    • May 18, 2016
      • Plant Development
      • Tasks to perform now
        • Cedar-apple rust treatments on apples
        • Codling moth treatments
        • Pine needle scale treatments
      • Tasks to do in a week or two
        • Bronze birch borer treatments
      • Timely Topics
        • Frost damage on trees
        • Cedar-apple rust galls on junipers
        • Oystershell scale
      • E-samples
        • Maple bladder galls
        • Pine tortoise scale
    • May 11, 2016
      • Plant Development
      • Tasks to perform now
        • Clearwing ash borer treatments
        • Spruce needlecast treatments
      • Tasks to do in a week or two
        • Codling moth treatments
        • Pine needle scale
      • Timely Topics
        • Mushroom hunting
      • E-samples
        • Galls on junipers
        • Crown rust
    • May 4, 2016
      • Plant Development
      • Tasks to perform now
        • Clearwing ash borer treatments
        • Diplodia tip blight treatments
        • Zimmerman pine moth treatments
      • Tasks to do soon
        • Spruce needlecast treatments
      • Timely Topics
        • Seed crop on elms
      • E-samples
        • Alcohol Flux
        • Sunscald on maple
    • April 27, 2016
      • Plant Development
      • Tasks to perform now
        • Apple scab second application
        • Spruce spider mite treatment
      • Tasks to do soon
        • Clearwing ash borer treatments
      • Timely Topics
        • Bark beetle treatments in the Black Hills
        • Problems with spraying for bark beetles
      • E-samples
        • Elm calligrapha
        • Redcedar in gardens
        • Winter burn on yews
    • April 13, 2016
      • Plant Development
      • Timely Topics
        • Buying nursery stock
        • Blueberies
        • Training young trees
      • E-samples
        • Ash flower gall mite
        • Mushrooms in lawns
        • Sapsuckers
    • April 6, 2016
      • Plant Development
      • Timely Topics
        • Tent caterpillars
      • E-samples
        • Discolored Scotch pine
        • Split elm trunk
        • Poor pruning on a silver maple
    • March 30, 2016
      • Plant Development
      • Timely Topics
        • Spring fruit tree treatments
      • E-samples
        • Black knot
        • Cedar-apple rust galls
        • Juniper pollen cones
    • March 23, 2016
      • Plant Development
      • Timely Topics
        • Pruning competing leaders in young spruce
      • E-samples
        • Crown gall on cherry
        • Aspen twiggall fly
    • March 16, 2016
      • Timely Topics
        • Stump grinding
      • E-Samples
        • Pine needle scale
        • Aspen heart rot
    • March 9, 2016
      • Timely Topics
        • Walnut syrup
      • E-samples
        • Borers in trees
    • March 2, 2016
      • Timely Topics
        • Pruning out fire blight
        • Pruning shrubs
      • E-samples
        • Bur oak, galls and woodpeckers
        • Browsing on pine needles
    • February 17, 2016
      • Timely Topics
        • What to do about bunny damage
      • E-samples
        • Sunscald on maple
        • Topped silver maple
    • February 3, 2016
      • Timely Topics
        • Maple sap may be flowing soon
        • Tent caterpillars egg mass removal
        • Fruit tree pollination requirements
        • Forcing flowering shrubs to bloom indoors (did it work)
      • E-samples
        • Bagworms in spruce tree
    • January 20, 2016
      • Timely Topics
        • Now is the time to order bare-root stock from your districts
        • Forcing flowering shrubs to bloom indoors
      • E-samples
        • Possible emerald ash borer infestations (in New York)
        • Pine tips littering the ground
    • January 6, 2016
      • Timely Topics
        • Celebrate the Winter! Some plants with winter interest
        • A sign of spring: red oaks are shedding their leaves
        • Will the cold hurt my trees?
      • E-samples
        • Hackberry witches'-broom

    2015 Alerts

    • December 16, 2015
      • Timely Topics (Oh Deer! How to reduce damage to woody plants)
      • E-samples (leaf-footed bugs in home)
    • December 2-9, 2015
      • Timely Topics (sunscald and frost cracks on ornamental trees)
      • E-samples (Ichneumon wasps; pine bark adelgid)
    • November 18-25, 2015
      • Timely Topics (finding the perfect Christmas tree)
      • E-samples (moving mountain pine beetle in firewood)
    • November 4-11, 2015
      • Timely Topics (ash yellow; Jack pine as a landscape tree; diplodia tip blight)
      • E-samples (apple identification; euonymus aerial rootlets; pine wilt; sapsucker injury on pine)
    • October 21-28, 2015
      • Timely Topics (buying firewood)
      • E-samples (bark lice; boxelder borer; juniper broom rust)
    • October 7-14, 2015
      • Timely Topics (fall color; fall color on evergreens)
      • E-samples (ash seed weevil; color change on arborvitae; termites)
    • September 23, 2015
      • Timely Topics (chestnuts versus buckeyes; lightning struck trees)
      • E-samples (dogwood sawfly)
    • September 16, 2015
      • Timely Topics (oak leaf blister; why is the ground so "sappy" beneath my pine?)
      • E-samples (ash anthracnose on black ash; leaf crumpler on cotoneaster)
    • September 9, 2015
      • Timely Topics (why are the leaves discolored and falling off my aspen, cottonwood or poplar tree?)
      • E-samples (oak leaf blister; hedgehog gall on oak)
    • September 2, 2015
      • Timely Topics (eating the fallen "chestnuts;" mighty trees from small acorns; what about BOB?)
      • E-samples (frogeye)
    • August 26, 2015
      • Timely Topics (harvest walnut for seeds and food; fall webworm; common buckthorn fruit - DO NOT EAT)
      • E-samples (fasciation on spirea; melampsora on cottonwood; septoria on dogwood; tar spot on maple)
    • August 19, 2015
      • Plant Development
      • Timely Topics (verticillium wilt; stem girdling roots)
      • E-samples (ash bark beetle; ground beetles; walnut anthracnose; sulphur fungus)
    • August 12, 2015
      • Plant Development
      • Timely Topics (fall webworm; mountain pine beetle)
      • E-samples (elm sawfly; fireblight on cotoneaster; oak anthracnose)
    • August 5, 2015
      • Plant Development
      • Timely Topics (Willow blight; Ants & trees)
      • E-Samples (Golden soldier beetle; Tar spot on maple; Wooly oak gall)
    • July 29, 2015
      • Plant Development
      • Timely Topics (why is my pine turning brown at the tip? {diplodia tip blight}; why is my spurce turning brown? {spruce spider mite})
      • E-samples (plant identification for jams and jellies; pear slug; bacteria leaf spot; hawthorn rust)
    • July 15, 2015
      • Plant Development
      • Timely Topics (Dutch elm disease; locust borer)
      • E-Samples (fireblight)
    • July 8, 2015
      • Plant Development
      • Pest Treatments to be done now (apple maggot)
      • Timely Topics (pine wilt disease; emerald ash borer - and it has NOT been found in South Dakota)
      • E-samples (ash leaf curl aphid; ash rust; cedar-apple rust; cedar-quince rust; cholorosis on river birch; cottonwood twig shedding and petiole gall; frogeye on apple; hormonal herbicide injury; honeylocust podgall midge)
    • July 1, 2015
      • Plant Development
      • Pest Treatments to be done soon (apple maggot)
      • Timely Topics (why are the lower branches dying on my blue spruce; tree damage with the recent storm)
      • E-samples (ash rust; dog vomit fungus; elm sawfly; plum pocket)
    • June 24, 2015
      • Plant Development
      • Pest treatments to be done now (spruce bud scale; spruce needleminer)
      • Timely Topics (ash leaf curl aphid; Dutch elm disease is beginnins to show up across the state; elm leaves are turning yellow due to scales as well as DED)
      • E-samples (red turpentine beetle; herbicide injury on lilac; venturia leaf and shoot blight)
    • June 17, 2015
      • Plant Development
      • Pest treatments to be done now (spruce bud scale; spruce needleminer)
      • Timely Topics (why are my tree's leaves turning yellow?)
      • E-samples (cottony maple scale; fireblight; hackberry galls; spiny elm caterpillars; wooly elm aphid)
    • June 10, 2015
      • Plant Development
      • Pest treatments to be done now (dothistroma needle blight)
      • Timely Topics (Voles, voles, and more voles)
      • E-samples (aphids, ash rust, cedar-apple rust, poplar bud gall, redheaded ash borer, woolly elm aphid)
    • June 3, 2015
      • Plant Development
      • Pest treatments to be done now (dothistroma needle blight)
      • Timely Topics (herbicide damage to windbreaks; silver and Freeman maples looking a little thin)
      • E-samples (maple bladder gall; peach leaf curl; spruce gall adelgids; vole damage in cedars)
    • May 27, 2015
      • Plant Development
      • Treatments (codling moth; shearing pines; phomopsis twig blight)
      • Timely Topics (ash anthracnose; hackberry leaf drop)
      • E-samples (buckeye rust; basswood mites)
    • May 20, 2015
      • Plant Development
      • Treatments (diplodia tip blight; spruce spider mite; Zimmerman pine moth)
      • Timely Topics (cedar-apple rust; leaves injured by cold weather)
      • E-samples (European elm scale; pine tortoise scale; pine sawfly)
    • May 13, 2015
      • Plant Development
      • Treatments (ash-lilac borer, cedar-apple rust, tent caterpillars)
      • Timely Topics
        • What will happen to freeze-damaged leaves?
        • Caring for young trees damaged by the recent storms
        • What to do with mature trees damaged by the storms
        • Use caution when removing storm-damaged trees
      • E-samples (sapsucker damage to lindens, winter-kill on spireas)
    • April 29, 2015
      • Plant Development
      • Treatments (ash-lilac borer; apple scab; cedar-apple rust; spruce needleminer; tent caterpillars)
      • Timely Topics (pollinating a single apple tree; managing cedar-apple rust on cedars {junipers}; treatments for mountain pine beetle and pine engraver beetle)
      • E-samples (browning evergreens; bed borers!)
    • April 22, 2015
      • Plant Development
      • Timely Topics (watering trees during drought; black "buds" on the ground beneath ash trees)
      • E-samples (bronze birch borer; cedar-apple rust; wild cucumber vine)
    • April 15, 2015
      • Plant Development
      • Timely Topics (pine engraver beetles are flying; planting bare-root trees; phomopsis spruce decline)
      • E-samples (tent caterpillar - time ro remove the nests; black knot)
    • April 8, 2015
      • Timely Topics (time to treat for apple scab; walnut toxicity to nearby plants; planting trees on old feedlots)
      • E-samples (spacing for Colorado spruce in a tree belt; banded ash borer exit holes)
    • April 1, 2015
      • Timely Topics (pruning flowering shrubs)
      • E-samples (banded ash borers are flying; desiccation injury on spruce; gall wasps on oak)
    • March 18, 2015
      • Timely Topics (it's maple syrup time again!)
      • E-samples (cedar-apple rust)
    • March 4, 2015
      • Timely Topics (emerald ash borer symposium, pruning young fruit trees)
      • E-samples (vole damage)
    • February 18, 2015
      • Timely Topics (emerald ash borer symposium)
      • E-samples (yellowing Schotch pines)
    • February 4, 2015
      • Timely Topics (oak gall and woodpeckers - a lethal combination)
      • E-samples (deer damage to pines)
    • January 21, 2015
      • Timely Topics (ash substitutes in windbreaks)
      • E-samples (porcupine and squirrel damage to trees)
    • January 7, 2015
      • Timely Topics (tips on buying firewood)
      • E-samples (rabbit damage to trees)

    2014 Alerts

    • December 24, 2014
      • Timely Topics (winter icing damage to trees)
      • E-samples (witches' broom on hackberry)
    • December 17, 2014
      • Timely Topics (winter watering)
      • E-samples (pigeon tremex and silver maples)
    • December 3, 2014
      • Timely Topics (use of ice melting products)
      • E-samples (buckeyes not chestnuts; Scotch pines turning color)
    • November 19, 2014
      • Timely Topics (finding the perfect Christmas tree)
      • E-samples (Parson spider; blowfly maggots)
    • October 29, 2014
      • Timely Topics (what to do about deer)
      • E-samples (apple mealybug)
    • October 15, 2014
      • Timely Topics (water your evergreens now to reduce winterburn injury; tent caterpillar control begins now)
      • E-Samples (ash seed weevils; bark lice; decay fungus on a maple and southwest disease)
    • October 1, 2014
      • Timely Topics (what causes leaves to turn color in the fall; What is wrong with my apples)
      • E-samples (mulberry identification; apple russetting; powder post beetle)
    • September 24, 2014
      • Timely Topics (fall needle color change on evergreens)
      • E-samples (puffball and sulphur fungi)
    • September 17, 2014
      • Timely Topics (be careful what you pick for fruit)
      • E-samples (cotoneaster leaf crumpler; cotoneaster identification; plum curculio in plum)
    • September 10, 2014
      • Timely Topics (freeze injury on apple fruit; did the cold kill the mountain pine beetle?)
      • E-samples (bacterial blight of lilac; fall webworm; honeysuckle aphid)
    • August 27, 2014
      • Timely Topics (what about BOB? -Bur Oak Blight)
      • E-samples (fall webwork; septoria leaf spot on dogwood)
    • August 20, 2014
      • Timely Topics (poison ivy reminder; a leaf spot disease of ash)
      • E-samples (brown felt blight on spruce; earwigs)
    • August 8, 2014
      • Timely Topics (Squirrel damage to hackberries)
      • E-samples (hackberry island chlorosis; leafcutter bees; walnut anthracnose)
    • July 30, 2014
      • E-samples (mites on viburnum; saltcedar in bloom; tar spot appearing)
    • July 23, 2014
      • Timely topics (herbicide drift claims)
      • E-samples (ash and privet borer; chokecherry midge; Dutch elm disease; fireblight; plum curculio)
    • July 14, 2014
      • Timely topics (leaf fall on cottonwoods; poplar gall aphids; willow cone gall midges)
      • E-samples (Tartarian honeysuckle fruit; pear scab; mildew on oaks)
    • July 7, 2014
      • Timely topics (ash leaf curl aphid; cedars - what is going on with them; Dutch elm disease; powdery mildew)
      • E-samples (ash and privet borer; anthracnose)
    • July 1, 2014
      • Timely Topics (cedar dieback update; apple maggot)
      • E-samples (maple bladder gall; plum pockets; dog vomit fungus)
    • June 25, 2014
      • Timely topics (bumps on trees, maple bladder gall, and plum pockets; cedars dying in central South Dakota)
      • E-samples (shothold diseases of chokecherry; clearwing ash borer pupae; winter injury on birch)
    • June 18, 2014
      • SD Dept. of Agriculture new Log Finder website
      • Timely topics (clearwing ash borers are flying)
      • E-samples (trees planted by the squirrels; boxelder gall midge; ash rust; crown rust on buckthorn)
    • June 11, 2014
      • Timely topics (tasks to be completed now: clearwing ash borer, codling moth; Problems with ash, frost, glyphosate and hail; Hackberry leaf tatters)
      • E-samples (winter kill on yews, Zimmerman pine moth)
    • June 4, 2014
      • Timely topics (tasks to be completed now: clearwing ash borer, mountain pine beetle)
      • E-samples (apple scab, apricot scab, chlorosis on trees, cryptosphaeria canker on aspen)
    • May 28, 2014
      • Timely topics (tasks to be completed now: apple scab treatments, diplodia tip blight, tasks to do soon: clearwing ash borer, what's up with ash, woodpecker damage on oak continues)
      • E-samples (white snowberry identification, junipers (cedars) turning brown, cytospora canker in blue spruce)
    • May 14, 2014
      • Timely topics (tasks to be completed now: apple scab treatments, tasks to do soon: clearwing ash borer, diplodia tip blight, spurce spider mites and zimmerman pine moth.)
      • E-samples (ash flowers falling, elm seeds falling, mushrooms in the lawn)
    • May 7, 2014
      • Timely topics (tasks to be completed now: apple scab treatments, tasks to do soon: clearwing ash borer, zimmerman pine moth)
      • E-samples (pine needle scale, wetwood, alcoholic flux)
    • April 23, 2014
      • Timely topics (tasks to be completed now, current concerns)
      • E-samples (spruce losing bark, borer in silver maple)
    • April 9, 2014
      • Timely topics (winterburn on evergreens)
      • E-samples (algae, lichens and moss, winterburn on spruce)
    • March 26, 2014
      • Timely topics (it is maple syrup time, what to do about rabbit damaged trees)
      • E-samples (banded elm bark beetles, leaning pines)
    • March 12, 2014
      • Timely topics (Korean fir - a tree worth trying, winter desiccation injury on pines in the Black Hills, mountain pine beetle update)
      • E-samples (elytroderma needle cast)
    • February 26, 2014
      • Timely topics (the winter cold and our trees and shrubs, the winter cold and moutain pine beetle/emerald ash borer, common hoptree is anything but common.)
      • E-samples (carpenter ants, rabbit damage to trees)
    • February 12, 2014
      • Timely topics (emerald ash borer update, which holds up better, red or yellow fruit on a crabapple)
      • E-samples (lilac identification, what killed the maple)

    2013 Alerts

    • December 2013
      • Timely topics (the tree book is out)
    • November 13 - 20, 2013
      • Timely Topics (the tree book is out, finding the perfect Christmas tree)
      • E-samples (cotoneaster identification)
    • October 30 - November 6, 2013
      • Timely Topics (ash trees are "raining" worms)
      • E-samples (blemishes on applies, puffballs)
    • October 16-23, 2013
      • Timely Topics (firewood)
      • E-samples (chokeberry identification, oak galls, pine needle scale)
    • October 2-9, 2013
      • Timely Topics (snow storm tree damage in the Black Hills, autumn needle drop and evergreens, first annual wood utiliziation workshop Oct. 12 in Brookings)
      • E-samples (horntails still be found in trees, Ussurian pear fruit)
    • September 18-25, 2013
      • Timely Topics (emerald ash borer discovered in Colorado, autumn needle drop and evergreens, first annual wood utilization workshop Oct. 12 in Brookings)
      • E-samples (melampsora leaf rust, tar spot, horntails found in trees and stumps)
    • September 11, 2013
      • Timely Topics (fall color season is almost here)
      • E-Samples (barklice, carpenterworm in ash, fall webworm nests)
    • September 4, 2013
      • Timely Topics (ash and other trees beginning to turn yellow, spruce showing drought stress, a correction to the August 19 Update)
      • E-Samples (ash borer in lilac, sulfur yellow fungi)
    • August 28, 2013
      • Timely Topics (better begin waterting now)
      • E-samples (European flea weevil on elm, willow scab, common chokecherry identification, common buckthorn - a plant NOT to confuse with chokecherry)
    • August 19, 2013
      • Timely Topics (a great year for apricots and peaches)
      • E-samples (willow blight, herbicide injury and trees, ash flower gall mite, leaf cutter bees)
    • August 12, 2013
      • Timely Topics (plant development, verticillium wilt of catalpa, cedar bark beetles are flying)
      • E-samples (linden leaf blotch, cytospora canker on stone fruit, frogeye disease on apple)
    • August 5, 2013
      • Timely topics (plant development, why are the leaves turning color)
      • E-samples (mulberry identification, witches' broom on hackberry, tar spot on maples)
    • July 31, 2013
      • Timely topics (plant development)
      • E-samples (mulberry identification, lecanium scale, pine needle scale, sawyer beetles in pines)
    • July 24, 2013
      • Timely topics (plant development)
      • E-samples (apple maggot, apple scab, cedar-apple rust, fruit cracking on apples, anthracnose on raspberries, picnic beetles in raspberries, giant willow aphid)
    • July 17, 2013
      • Timely topics (plant development, cottonwood "cotton" confused with webbing for spider mites)
      • E-samples (black chokeberry, chlorotic maples)
    • July 10, 2013
      • Timely topics (plant development, what to treat now: apple maggot)
      • E-samples (ash flower gall, ash leaf curl aphid, black knot, powdery mildew)
    • July 4, 2013
      • Timely topics (plant development, what to treat now: apple maggot, information you can use: mountain pine beetles are beginning to fly)
      • E-samples (aphids, pine sawflies, poplar vagabond aphid)
    • June 17, 2013
      • Timely topics (plant development, what to treat now: spruce bud scale, spruce needleminer, information you can use: why are spruce dying across the state, dutch elm disease symptoms are appearing)
      • E-samples (apple scab, cottonwood petiole gall, leaf blotch disease of buckeye, procerum root disease of white pine)
    • June 12, 2013
      • Timely topics (plant development, what to treat now or soon: spruce bud scale, spruce needleminer, information you can use: stinger to kill broadleaf weeds in conifer belts)
      • E-Samples (cedar-apple rust, cicadas, hackberry tatters, hound's tongue)
    • June 5, 2013
      • Timely topics (plant development, what to treat now or soon: mountain pine beetle treatments)
      • E-Samples (browning arborvitae, dieback on maples, ash rust, crown rust, hackberry tatters)
    • May 29, 2013
      • Timely topics (plant development, what to treat now or soon: codling moth, shearing pines, juniper twig blight)
      • Problems seen in the field (shot-hole disease of apricot)
      • E-Sampes (identification of common chokecherry, dying spruce, European pine sawfly)
    • May 22, 2013
      • Timely topics (plant development, what pests to treat soon: second treatment of apple scab, clearwing ash borer, diplodia tip blight, spruce spider mites)
      • E-samples (cedar-apple rust, curled spruce tips, diplodia tip blight, mossy rose gall)
    • May 15, 2013
      • Timely topics (plant development, what pests to treat soon: clearwing ash borer, diplodia tip blight; Is it ok to use fresh wood and bark mulch in the landscape)
      • E-samples (elm seed crop, spruce bud scale and ants, spruce declining, junipers covered with windblown soil)
    • May 8, 2013
      • Timely topics (plant development, what pests to treat now: apple scab, tent caterpillars, Zimmerman pine moth; what pests to treat in another week or so: clearwing ash borer, diplodia tip blight)
      • E-samples (cedartree borers, drought-stressed spruce, people as pests)
    • May 1, 2013
      • Timely topics (plant development, treating for apple scab, treating for tent caterpillars, treating for Zimmerman pine moth)
      • E-samples (cedar bark beetles in central South Dakota, banded ash borer appearing in homes, rabbit damaged trees: can they be saved)
    • April 24, 2013
      • Timely topics (the winter continues, treating for apple scab is coming up soon, update on pine bark beetles, problems occurring with spraying for bark beetles)
      • E-Samples (winter burn on evergreens)
    • April 17, 2013
      • Timely topics (the winter continues, what does this continued cold weather do to plants, ice storm follow-up)
      • E-Samples (bunnies in the belts, cytospora canker on spruce, gummosis on Prunus)
    • April 10, 2013
      • Timely topics (the ice storm and trees, Is honeycrisp a good apple, substituting lime sulfur)
      • E-samples (squirrels in pines, squirrels in elms)
    • April 3, 2013
      • Timely Topics (how many trees do I need to have fruit, fertilizing seedling trees)
      • E-samples (voles in junipers, squirrels in elms)
    • March 20, 2013
      • Timely Topics (pine engraver beetles, fertilizing seedling trees)
      • E-samples (bronze birch borer)
    • March 6, 2013
      • Timely Topics (making maple syrup, trees for abandon feedlots)
      • E-samples (vole injury to trees)
    • February 6, 2013
      • Current Concerns (comon ash borers and bark beetles)
      • E-samples (zimmerman pine moth, deer damage caragana)
    • January 23, 2013
      • Current Concerns (is this cold weather going to harm trees, gold in them thar trees)
      • E-samples (yellow foliage on scotch pines)
    • January 9, 2013
      • Current Concerns (rabbits are out in force, imprelis tree injury update)
      • E-samples (horned oak gall, sawyer beetle pine wilt)