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Apple/Crabapple (Malus):
Aphids on Deciduous Trees and Shrubs
Apple Maggot Management
Apple Scab
Disease Management Recommendations for Trees and Shrubs
(Black Rot Canker, Cedar-Apple Rust, Fireblight, Frog-eye Leaf Spot, Powdery Mildew, and Apple Scab)
Fireblight
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Scale Insects of Trees and Shrubs
Spring and Fall Cankerworms
Wooly Aphids on Trees and Shrubs
Ash (Fraxinus):
Anthracnose Diseases of Eastern Hardwoods
Anthracnose of Ash Trees
Anthracnose of Shade Trees
Aphids on Deciduous Trees and Shrubs
Ash and Honeylocust Plant Bugs
Ash Flower Gall
Ash Plant Bugs
Ash Rust
Ash Tree Decline
Ash trees losing leaves? Chances are they'll recover on their own.
Three Ash Diseases You Should Know (MN DNR)
Emerald Ash Borer
The emerald ash borer (EAB) has not been found in the state of Minnesota, but it is something we should all be aware of because it is predicted to migrate to this area.
HOW to Identify and Manage Ash Yellows in Forest Stands and Home Landscapes (USFS)
Disease Management Recommendations for Trees and Shrubs
(Anthracnose, Ash Yellows, Heart Rot, Sulfur Shelf Heart Rot, Verticillium Wilt)
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Nectria Canker
Sawflies of Trees and Shrubs
Scale Insects of Trees and Shrubs
Spring and Fall Cankerworms
Verticillium Wilt of Trees and Shrubs
Wooly Aphids on Trees and Shrubs
Aspen/Cottonwoods/Poplar (Populus):
Decay and Discoloration of Aspen (USFS)
Disease Management Recommendations for Trees and Shrubs
(Cankers, Leaf Rust, Marssonina Leaf Spot, and Shoot Blight)
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
Hypoxylon Canker of Aspen (USFS)
Hypoxylon Canker on Aspens and Willows
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Leaf Beetles in Urban Landscapes
Leaf Spot Diseases of Poplar
Nectria Canker
Scale Insects of Trees and Shrubs
Spear-Marked Black Moth (USFS)
HOW to Identify and Minimize White Trunk Rot in Aspen (USFS)
Basswood/Linden (Tilia):
Anthracnose Diseases of Eastern Hardwoods
HOW to Identify Introduced Basswood Thrips (USFS)
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Japanese Beetle Management in Minnesota
Lace Bugs on Deciduous Trees and Shrubs
Nectria Canker
Sooty Mold
Spring and Fall Cankerworms
Beech (Fagus):
Beech Bark Disease (USFS)
Birch (Betula):
Anthracnose Diseases of Eastern Hardwoods
Birch Dieback
Birch Leafminers
Birch FAQ's
The Bronze Birch Borer (USFS)
The Bronze Birch Borer and Its Management
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
HOW to Grow and Maintain a Healthy Birch Tree (USFS)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Nectria Canker
Sawflies of Trees and Shrubs
Spear-Marked Black Moth (USFS)
Black Locust (Robinia):
The Locust Borer (USFS)
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Catalpa (Catalpa):
Anthracnose Diseases of Eastern Hardwoods
Disease Management Recommendations for Trees and Shrubs
(Verticillium Wilt)
Verticillium Wilt of Trees and Shrubs
Cherry (Prunus):
Black Knot
Black Knot of Cherry
Disease Management Recommendations for Trees and Shrubs
(Bacterial Spot and Canker, Black Knot, Brown Rot, Canker, Leaf Spot, Plum Pockets and Leaf Curl, and Western X Disease)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
Wooly Aphids on Trees and Shrubs
Cottonwoods (Populus)- See Aspen
Dogwood (Cornus):
Disease Management Recommendations for Trees and Shrubs
(Leaf Spot)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Elm (Ulmus):
Anthracnose Diseases of Eastern Hardwoods
Disease Management Recommendations for Trees and Shrubs
(Cankers, Dutch Elm Disease, Elm Black Leaf Spot- elm anthracnose, Oyster canker, and Wetwood or Slime Flux)
Dutch Elm Disease
History of Dutch Elm Diseases in Minnesota
HOW to Differentiate Dutch Elm Disease From Elm Phloem Necrosis (USFS)
HOW to Identify and Manage Dutch Elm Disease (USFS)
HOW TO Save Dutch Elm Diseased Trees by Pruning (USFS)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Leaf Beetles in Urban Landscapes
Native Elm Bark Beetle Control
Nectria Canker
Scale Insects of Trees and Shrubs
Sooty Mold
Spring and Fall Cankerworms
Trees Weeping Along Bark
Wetwood
Wooly Aphids on Trees and Shrubs
Hackberry (Celtis):
Disease Management Recommendations for Trees and Shrubs
(Witches Broom Fungus)
Spring and Fall Cankerworms
Hackberry Nipple Gall
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
Hawthorn (Crataegus):
Disease Management Recommendations for Trees and Shrubs
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
Wooly Aphids on Trees and Shrubs
Hickory (Carya):
Anthracnose Diseases of Eastern Hardwoods
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Phomopsis Canker and Gall
Honeylocust (Gelditsia):
Ash and Honeylocust Plant Bugs
Disease Management Recommendations for Trees and Shrubs
(Nectria Canker)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Nectria Canker
Horsechestnut/Ohio Buckeye (Aesculus):
Anthracnose Diseases of Eastern Hardwoods
Disease Management Recommendations for Trees and Shrubs
(Leaf Blight)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lilac (Syringa):
Bacterial Blight of Lilac
Disease Management Recommendations for Trees and Shrubs
(Bacterial Blight, Powdery Mildew)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Scale Insects of Trees and Shrubs
Maple (Acer):
Anthracnose and Other Fungal Leaf Spot Diseases of Maple
Anthracnose Diseases of Eastern Hardwoods
Anthracnose of Shade Trees
Aphids on Deciduous Trees and Shrubs
HOW to Identify and Control the Sugar Maple Borer (USFS)
Cottony Maple Scale
Disease Management Recommendations for Trees and Shrubs
(Anthracnose, Leaf Spot, Target-Shaped Canker, Tar Spot, and Verticillium Wilt)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Maple Petiole Borer / Maple Trees Dropping Leaves
Maple Leaf Galls
Nectria Canker
HOW to Control Sapstreak Disease of Sugar Maple (USFS)
Scale Insects of Trees and Shrubs
Spring and Fall Cankerworms
Verticillium Wilt of Trees and Shrubs
Wooly Aphids on Trees and Shrubs
Mountain-Ash (Sorbus):
Disease Management Recommendations for Trees and Shrubs
(Black Rot, Cankers)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Sawflies of Trees and Shrubs
Scale Insects of Trees and Shrubs
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Oak (Quercus):
Anthracnose Diseases of Eastern Hardwoods
Anthracnose of Shade Trees
Oak Anthracnose
Aphids on Deciduous Trees and Shrubs
Oak Decline (USFS)
Disease Management Recommendations for Trees and Shrubs
(Anthracnose, Armillaria Root Rot, Oak Heart Rot, Oak Leaf Blister, Oak Wilt, and Smooth Patch)
Forest Tent Caterpillars in Minnesota
Forest Tent Caterpillar (USFS)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
HOW to Distinguish Oak LEAFTIERS From LEAFROLLERS (USFS)
Nectria Canker
Red Oak Borer (USFS)
Twolined Chestnut Borer (USFS)
Smooth Patch
Spring and Fall Cankerworms
Oak Wilt (USFS)
Oak Wilt in Minnesota
(free pamphlet)
Oak Wilt - Identifying
(fact sheet)
HOW to Collect Field Samples and Identify the Oak Wilt Fungus in the Laboratory (USFS)
HOW to Identify, Prevent, and Control Oak Wilt (116 KB) (USFS)
Oak Wilt - Preventing
(fact sheet)
Protecting Your Trees From Oak Wilt
WI DNR (Adobe .pfd file)
Ohio Buckeye (See Horsechestnut)
Poplar (See Aspen)
Walnut/ Butternut (Juglans):
Anthracnose Diseases of Eastern Hardwoods
HOW to Identify Butternut Canker and Manage Butternut Trees (USFS)
HOW to Diagnose Black Walnut Damage (USFS)
Disease Management Recommendations for Trees and Shrubs
(Anthracnose)
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
HOW to Identify and Control Leaf Spot Diseases of Black Walnut (USFS)
HOW to Identify and Control Black Walnut Mycosphaerella Leaf Spot (USFS)
Nectria Canker
Willow (Salix):
Aphids on Deciduous Trees and Shrubs
Disease Management Recommendations for Trees and Shrubs
(Cytospora Canker,Willow Scab/Twig Blight)
The Gypsy Moth (USFS)
Gypsy Moth: A Threat to Minnesota
Hypoxylon Canker on Aspens and Willows
Insecticide Suggestions to Manage Landscape Tree and Shrub Insects
Lace Bugs on Deciduous Trees and Shrubs
Sawflies of Trees and Shrubs
Scale Insects of Trees and Shrubs
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