Tree Health News & Expert Tips
Outbreak alerts, seasonal care guides, and expert advice from ISA Certified Arborists to keep your trees healthy.
Asian Longhorned Beetle in September: Protect Your Hardwoods Now
September marks the tail end of Asian Longhorned Beetle season. Here's what homeowners should inspect and do right now to protect hardwood trees.
Read more →Asian Longhorned Beetle: What to Do This September
Asian Longhorned Beetle reaches peak seasonal activity in September. Here's what homeowners should watch for and do right now.
Asian Longhorned Beetle in September: What Homeowners Must Do Now
Asian Longhorned Beetle is entering peak activity this September. Here's how to spot it, where it's active, and what to do right now.
Asian Longhorned Beetle Peak Activity: What to Do This September
September marks the final stretch of Asian Longhorned Beetle season. Here's how to protect your hardwoods before activity winds down.
Asian Longhorned Beetle Peak Activity: What to Do in September
September marks the tail end of Asian Longhorned Beetle season. Here's how to spot damage and protect your hardwood trees this month.
Asian Longhorned Beetle in August: What Homeowners Must Do Now
Asian Longhorned Beetle hits peak activity in August. Learn what to look for and how to protect your hardwood trees this month.
Asian Longhorned Beetle August Alert: Protect Your Hardwoods Now
August is peak season for Asian Longhorned Beetle activity. Learn what to look for and how to protect your hardwood trees this month.
Asian Longhorned Beetle in August: Protect Your Hardwoods Now
Asian Longhorned Beetle hits peak activity in August. Learn what to look for and what to do this month to protect your hardwood trees.
Asian Longhorned Beetle Peak Activity: What to Do This August
August is a critical month for Asian Longhorned Beetle activity. Learn what to look for and how to protect your hardwood trees right now.
Asian Longhorned Beetle Alert: What to Do This August
Asian Longhorned Beetle hits peak activity in August. Here's what homeowners should look for and do right now to protect hardwood trees.
Asian Longhorned Beetle August 2024: Protect Your Hardwoods Now
Asian Longhorned Beetle hits peak activity in August. Learn what to look for on your hardwood trees and what to do this month to protect them.
Asian Longhorned Beetle: What to Do in August 2025
Asian Longhorned Beetle hits peak activity in August. Learn what to look for and how to protect your hardwood trees this month.
Asian Longhorned Beetle: What Homeowners Must Do This August
Asian Longhorned Beetle hits peak activity in August. Learn what to look for, where it's active, and how to protect your hardwood trees now.
The Arborists Behind Our Wisconsin Coverage: Tree Wise Men LLC
Meet the Janesville-based ISA Certified crew answering homeowner questions, reviewing our guides, and taking on southern Wisconsin's toughest tree work.
Asian Longhorned Beetle Peak Activity: What to Do in August
August is prime time for Asian Longhorned Beetle activity. Learn what to look for on your hardwood trees and how to act now.
Carolina Pine Sawyer: Identification, Treatment & Control
Carolina Pine Sawyer is a moderate insect threat spreading across Ohio, Kentucky, and North Carolina. Learn how to identify and treat it.
White-Fringed Weevil: Identification, Treatment & Control
White-fringed weevil is a moderate tree health threat spreading across Kansas, North Carolina, and Oklahoma. Learn how to identify and treat it.
Rhodotus reticeps: Identification, Symptoms & Treatment
Rhodotus reticeps is a moderate fungal threat spreading across Minnesota, Indiana, and Pennsylvania. Learn how to identify and treat it.
Dot-lined White: Identification, Treatment & Tree Protection
Dot-lined White is a moderate insect threat affecting trees in Ohio, North Carolina, and Maryland. Learn how to identify and treat it.
Ten-lined June Beetle: Identification, Symptoms & Treatment
Ten-lined June Beetle poses a moderate threat to trees in Utah, California, and Colorado. Learn how to identify, treat, and protect your trees.
Swamp Cicada: Identification, Treatment & Tree Protection
Swamp Cicada is a moderate insect threat affecting trees in Louisiana, North Carolina, and Virginia. Learn how to identify and treat it.
Small-eyed Sphinx: Identification, Spread & Treatment Guide
The Small-eyed Sphinx is a moderate insect threat affecting trees across Illinois, Pennsylvania, Massachusetts, and Virginia. Learn how to identify and treat it.
Rosy Maple Moth: Identification, Spread & Treatment Guide
Rosy Maple Moth is a moderate insect threat affecting trees across the Northeast and Mid-Atlantic. Learn how to identify and treat it.
Io Moth: Identification, Treatment & Tree Protection Guide
Io Moth is a moderate insect threat spreading across Mississippi, Pennsylvania, Ohio, and Kentucky. Learn how to identify and treat it.
Splitgill Mushroom: Identification, Treatment & Tree Care
Splitgill mushroom is a moderate fungal threat affecting trees in Pennsylvania, Michigan, and Texas. Learn how to identify and treat it.
Hesperomyces harmoniae: Identification & Treatment Guide
Learn how to identify and treat Hesperomyces harmoniae, a moderate fungal threat spreading across Indiana, New York, and Maryland.
Golden Oyster Mushroom: Tree Health Threat Guide
Golden Oyster Mushroom is a moderate fungal threat spotted in NY, IL & MI. Learn identification, symptoms, and treatment options for your trees.
Crown-Tipped Coral Fungus: Identification & Treatment Guide
Crown-tipped coral fungus is a moderate tree health threat spreading across the Midwest and Northeast. Learn how to identify, treat, and protect your trees.
Chicken of the Woods: Tree Health Threat Guide
Chicken of the woods fungus is spreading across PA, NY & OH. Learn identification, symptoms, and treatment options to protect your trees.
Versute Sharpshooter: Identification, Spread & Treatment
The Versute Sharpshooter is a moderate-severity insect threat spreading across Kentucky, Massachusetts, and Kansas. Learn how to protect your trees.
Coppery Leafhopper: Identification, Treatment & Control
Coppery Leafhopper is a moderate insect threat spreading across Virginia, Alabama, and Indiana. Learn how to identify and treat it now.
Red-banded Leafhopper: Identification, Symptoms & Treatment
Red-banded Leafhopper is a moderate insect threat spreading across six U.S. states. Learn how to identify, treat, and protect your trees today.
California Tortoiseshell: Identification, Symptoms & Treatment
California Tortoiseshell is a moderate insect threat spreading across Washington, Oregon, and Idaho. Learn how to identify and treat it.
Small White Insect: Identification, Symptoms & Treatment
Small White is a moderate-severity insect threat spreading across Oklahoma, Massachusetts, and California. Learn how to identify and treat it.
Gulf Fritillary: Identification, Symptoms & Treatment Guide
Gulf Fritillary is a moderate insect threat affecting trees in Florida, California, and Louisiana. Learn how to identify and treat it.
Fourteen-spotted Lady Beetle: Identification & Treatment Guide
Fourteen-spotted Lady Beetle has been spotted across Michigan, Pennsylvania, and Connecticut. Learn how to identify and treat this moderate tree health threat.
Red Milkweed Beetle: Identification, Spread & Treatment
Red Milkweed Beetle is a moderate insect threat spreading across the Midwest and Northeast. Learn how to identify and treat it effectively.
Asian Longhorned Beetle: Protecting Your Hardwood Trees
The Asian Longhorned Beetle tunnels deep into hardwood trees, causing serious damage. Learn how to identify, treat, and protect your trees today.
Eastern Boxelder Bug: Identification, Symptoms & Treatment
Eastern Boxelder Bug is a moderate threat spreading across 14 states. Learn how to identify, treat, and protect your trees today.
Six-spotted Tiger Beetle: ID, Treatment & Tree Health Guide
Learn how to identify the Six-spotted Tiger Beetle, understand its threat to trees, and explore treatment options for affected regions.
Rockweed: What Pacific Northwest Tree Owners Need to Know
Rockweed has been observed in Alaska, Washington, and Oregon. Learn how to identify this moderate threat and protect your trees.
Spotted Pink Lady Beetle: Identification & Treatment Guide
The Spotted Pink Lady Beetle is a moderate tree health threat spreading across Texas, Illinois, Kansas, and Arkansas. Learn how to identify and treat it.
Turkey-Tail Fungus: Identification, Spread & Treatment
Turkey-tail fungus is a moderate tree health threat spreading across 7 U.S. states. Learn how to identify, treat, and protect your trees.
Ceramic Parchment: Tree Fungus Threat in the Northeast
Ceramic parchment is a moderate fungal threat spreading across New York, Georgia, and Massachusetts. Learn how to identify and treat it.
Pale Green Assassin Bug: Identification & Treatment Guide
Discover how to identify and manage the Pale Green Assassin Bug threatening trees across Kansas, Connecticut, Massachusetts, and Maryland.
Small Milkweed Bug: Identification, Treatment & Control
Small Milkweed Bug is a moderate insect threat spreading across CT, CO, and NY. Learn identification tips, treatment options, and when to call an arborist.
Eastern Leaf-footed Bug: Identification, Treatment & Control
Eastern Leaf-footed Bug is a moderate insect threat spreading across Mississippi, Florida, and Texas. Learn how to identify and treat it.
False Milkweed Bug: Identification, Treatment & Control
False Milkweed Bug is a moderate threat spreading across PA, NJ, and CT. Learn how to identify, treat, and protect your trees today.
Western Conifer Seed Bug: Identification & Treatment Guide
Western Conifer Seed Bug is spreading across Maryland, Ohio, New Jersey, and Michigan. Learn how to identify, treat, and protect your conifers.
North American Wheel Bug: Tree Threat Guide for Homeowners
Spotted a North American Wheel Bug on your trees? Learn identification tips, treatment options, and when to call a certified arborist.
Leptoglossus oppositus: Identification, Spread & Treatment
Leptoglossus oppositus is a moderate insect threat spreading across several U.S. states. Learn how to identify, treat, and protect your trees.
North American Common Water Strider: Tree Health Guide
Learn about North American Common Water Strider identification, symptoms, and treatment options to protect trees in affected regions.
Silver-spotted Skipper: Tree Threat Guide for Homeowners
Learn Silver-spotted Skipper identification, symptoms, and treatment options to protect trees in Oklahoma, Texas, Maryland, and beyond.
Eastern Tiger Swallowtail: Tree Health Guide for Homeowners
Eastern Tiger Swallowtail has been observed across 5 states. Learn identification tips, treatment options, and when to call a certified arborist.
Gray Hairstreak: Identification, Treatment & Tree Protection
Gray Hairstreak is a moderate insect threat affecting trees across six U.S. states. Learn how to identify, treat, and protect your trees today.
Painted Lady Butterfly: Tree Health Threat Guide
Painted Lady activity is raising concerns in Western states. Learn identification, symptoms, and treatment options to protect your trees.
Isabella Tiger Moth: Identification, Treatment & Tree Health
Isabella Tiger Moth poses a moderate threat to trees in Maryland, Massachusetts, and Oregon. Learn how to identify and treat it effectively.
Mourning Cloak: Identification, Treatment & Tree Health Guide
Mourning Cloak is a moderate insect threat affecting trees across 5 U.S. states. Learn how to identify, treat, and protect your trees today.
Monarch Insect Threat: Identification, Spread & Treatment
Monarch is a moderate insect threat affecting trees across 8 U.S. states. Learn how to identify, manage, and treat this pest before it spreads.
White-lined Sphinx: Identification, Symptoms & Treatment
White-lined Sphinx is a moderate insect threat spreading across the Southwest and West. Learn how to identify, treat, and protect your trees.
Red Admiral: What Homeowners Need to Know in 2024
Red Admiral is a moderate insect threat affecting trees across 8 states. Learn identification tips, treatment options, and when to call an arborist.
Seven-spotted Lady Beetle: Tree Health Guide & Treatment
Learn how to identify, manage, and treat Seven-spotted Lady Beetle activity affecting trees across 14 U.S. states.
Asian Lady Beetle: Tree Health Threat Guide for Homeowners
Asian Lady Beetle is a moderate tree health threat spreading across 21 states. Learn identification, treatment, and when to call an arborist.
Convergent Lady Beetle: Tree Health Threat Guide
Convergent Lady Beetle poses a moderate threat to trees across 6 U.S. states. Learn identification, symptoms, and treatment options.
Tar Spot on Maple Trees: Symptoms, Treatment & When to Worry
Those dramatic black spots on your maple leaves look alarming, but Tar Spot is almost entirely cosmetic. Here's what you need to know.
Bronze Birch Borer: Identification, Symptoms & Treatment
Bronze Birch Borer is a HIGH severity threat killing birch trees across 26 states. Learn to spot the signs early and protect your trees.
Phytophthora Root Rot: Identification, Treatment & Control
Phytophthora Root Rot silently kills trees across 31 states. Learn to spot the symptoms early and protect your trees before it's too late.
Verticillium Wilt: Symptoms, Treatment & Tree Recovery
Verticillium Wilt is a high-severity fungal disease killing maples, elms, and more across 27 states. Learn how to identify and treat it.
Bacterial Leaf Scorch: Symptoms, Treatment & What To Do
Bacterial Leaf Scorch is a high-severity, incurable tree disease spreading across the Eastern U.S. Learn how to identify and manage it.
Cytospora Canker: Symptoms, Treatment & Tree Protection
Cytospora Canker is a high-severity fungal threat killing spruce trees across 25 states. Learn how to identify, treat, and protect your trees.
Pine Wilt Disease: Symptoms, Treatment & What to Do
Pine Wilt Disease kills trees within weeks. Learn how to spot the symptoms, protect your pines, and when to call a certified arborist.
Stigmina/SNEED Needlecast: Protect Your Spruce Trees
Stigmina/SNEED Needlecast is a high-severity fungal disease devastating spruce trees across 20 states. Learn to identify and treat it.
Rhizosphaera Needlecast: Symptoms, Treatment & Control
Rhizosphaera Needlecast is a high-severity fungal disease destroying spruce trees across the Midwest and Northeast. Learn how to identify and treat it.
Laurel Wilt: A High-Severity Fungal Threat to Southern Trees
Laurel Wilt is a lethal fungal disease devastating redbay, sassafras, and avocado trees across the Southeast. Learn symptoms, spread, and treatment options.
Dothistroma Needle Blight: Identification & Treatment Guide
Dothistroma Needle Blight is stripping pine trees bare across 19 states. Learn how to spot it early and protect your trees before it's too late.
Diplodia Tip Blight: Identification, Treatment & Control
Diplodia Tip Blight is killing pines across the Midwest and Northeast. Learn how to spot symptoms early and protect your trees.
Fusiform Rust: Identifying and Treating This Pine Killer
Fusiform Rust is a high-severity fungal disease devastating loblolly and slash pines across the Southeast. Learn how to spot it and act fast.
Beech Leaf Disease: Identification, Symptoms & Treatment
Beech Leaf Disease is rapidly killing American beech trees across the Northeast. Learn how to spot it and protect your trees now.
Chestnut Blight: Identification, Symptoms & Treatment
Chestnut Blight devastated American forests. Learn how to identify symptoms, explore treatment options, and protect surviving trees.
Apple Scab: Symptoms, Treatment & How to Protect Your Trees
Apple Scab is the most economically important apple disease worldwide. Learn to identify symptoms early and protect your trees this season.
Cedar-Apple Rust: Identification, Symptoms & Treatment
Cedar-Apple Rust threatens apple trees and junipers across 33 states. Learn how to identify symptoms and protect your trees today.
Bagworm: Identification, Symptoms & Treatment Guide
Bagworms threaten over 100 tree species across the eastern US. Learn how to spot, treat, and stop these damaging insects before they defoliate your trees.
Ips Bark Beetles: Identification, Symptoms & Treatment
Ips bark beetles threaten stressed pines across 19 states. Learn how to identify symptoms early and protect your trees before an outbreak takes hold.
Mountain Pine Beetle: Symptoms, Treatment & How to Protect Your Trees
Mountain Pine Beetle is devastating millions of acres of western pines. Learn how to spot the signs early and protect your trees before it's too late.
Southern Pine Beetle: Identification, Treatment & Control
Southern Pine Beetle is a high-severity insect threat killing pine trees across 13 states. Learn to spot the signs and act fast.
Hemlock Woolly Adelgid: Identification, Spread & Treatment
Hemlock Woolly Adelgid is killing eastern hemlocks across 20 states. Learn how to spot it early and protect your trees before it's too late.
Asian Longhorned Beetle: Identification, Symptoms & Treatment
The Asian Longhorned Beetle is a critical threat to hardwood trees across the US. Learn how to spot it and protect your property.
Emerald Ash Borer in Wisconsin: 2026 Update and Treatment Options
Wisconsin's emerald ash borer infestation continues to expand. Get the latest 2026 county-by-county update, learn about trunk injection treatments, and find out whether your ash tree can still be saved.
Oak Wilt in the Midwest: Identification, Prevention, and Treatment
Oak wilt is devastating red and white oaks across Wisconsin, Minnesota, Michigan, Illinois, and other Midwest states. Learn how to identify symptoms, prevent spread, and treat infected trees.
Invasive Species Alert: Top 10 Threats to American Forests
Invasive pests and diseases have killed billions of trees across the United States. Meet the top 10 invasive threats currently reshaping America's forests and learn what is being done to stop them.
Emerald Ash Borer: The Silent Killer Spreading Across America
The emerald ash borer has killed hundreds of millions of ash trees since its discovery in 2002. Learn how to identify this invasive beetle and protect your ash trees before it reaches your area.
Best Trees to Plant in the Midwest: Disease-Resistant Species Guide
Choosing the right tree species is the best defense against disease and pests. This guide covers 15 disease-resistant trees proven to thrive in Midwest climates from Wisconsin to Missouri.
Japanese Beetle Damage on Midwest Trees: Identification and Control
Japanese beetles devastate lindens, birches, and crabapples across the Midwest every summer. Learn the complete lifecycle, identify damage patterns, and discover effective control strategies.
Climate Change and Tree Health: What's Changing
Rising temperatures, shifting precipitation patterns, and expanding pest ranges are transforming tree health across the continent. Understand the key impacts and what they mean for the trees in your yard.
How to Protect Your Trees During Midwest Ice Storms and Winter
Midwest winters are brutal on trees. Learn structural pruning, cabling, wrapping, and salt damage prevention techniques to protect your trees from ice storms and extreme cold.
Spring Tree Care Checklist: Protect Your Trees This Season
Spring is the most important season for tree health. Follow this expert checklist to ensure your trees thrive through the growing season and beyond.
The Importance of Trees in Urban Environments
Urban trees do far more than look pretty. From cooling cities and cleaning air to boosting property values and improving mental health, the benefits of urban trees are backed by decades of research.
How to Identify Spotted Lanternfly and What to Do
Spotted lanternfly has spread to over a dozen states and threatens hardwoods, fruit trees, and vineyards. Here is how to identify and report this invasive pest.
Tree Pruning 101: When, Why, and How
Proper pruning is the single most important thing you can do for your trees. Learn the right techniques, timing, and reasons for pruning — plus the common mistakes that cause lasting damage.
What Does an Arborist Do? A Complete Guide to Tree Care Professionals
Not sure when to call an arborist or what they actually do? This guide explains the training, certifications, and services that professional arborists provide — and how to find a qualified one in your area.
Understanding Oak Wilt: Prevention and Treatment Guide
Oak wilt is one of the most serious diseases threatening oak trees in the eastern and central United States. Learn the symptoms, prevention strategies, and available treatments.
Powdery Mildew on Trees and Shrubs: Complete Guide
That white, powdery coating on your tree leaves is one of the most recognizable plant diseases. Learn what causes powdery mildew, which trees it affects, and whether treatment is necessary.
Why Hiring an ISA Certified Arborist Matters
Not all tree care providers are equal. Learn why ISA certification matters and how to find a qualified arborist to protect your trees and your property.
Dutch Elm Disease in Illinois and Indiana: What Homeowners Need to Know
Dutch elm disease continues to kill American elms across Illinois and Indiana. Learn the history, symptoms, fungicide injection options, and which resistant cultivars can restore elms to your landscape.
Understanding Chlorosis: Why Tree Leaves Turn Yellow
Yellow leaves on your trees are not always a sign of disease — chlorosis is a nutrient deficiency that affects millions of trees. Learn what causes it, which species are most prone, and how to fix it.
Gypsy Moth (Spongy Moth) Outbreaks in Michigan and Wisconsin
Spongy moth populations are surging again in Michigan and Wisconsin. Learn to identify egg masses, understand Btk spraying, burlap banding, and when to call a professional for your trees.
Armillaria Root Rot: The Hidden Killer Under Your Trees
Armillaria root rot is one of the most widespread and destructive tree diseases in the world, yet most homeowners have never heard of it. Learn how to spot this underground threat before it topples your trees.
Fall Tree Health: Preparing Your Trees for Winter
Fall preparation can mean the difference between a tree that thrives and one that suffers winter damage. Follow these expert tips to winterize your trees.
Spring Tree Inspection Checklist for Midwest Homeowners
Spring is the most important time to evaluate your trees after a Midwest winter. Use this expert 15-point checklist to identify damage, disease, and pests before they become serious problems.
Fire Blight in Fruit Trees: Prevention and Treatment
Fire blight can devastate apple, pear, and crabapple trees in a single season. Learn how to recognize this bacterial disease early and implement effective prevention strategies to protect your fruit trees.
Thousand Cankers Disease: A Growing Threat to Midwest Black Walnut Trees
Thousand cankers disease threatens the Midwest's valuable black walnut trees. Learn about this devastating combination of the walnut twig beetle and Geosmithia fungus, current spread, and what homeowners can do.
Anthracnose: The Most Common Tree Disease Explained
Anthracnose affects nearly every type of hardwood tree and is the disease homeowners encounter most often. Learn to identify it, understand why it happens, and know when treatment is truly necessary.
Citrus Greening Disease Threatens Florida's Orchards
Citrus greening, also known as Huanglongbing, has devastated Florida's citrus industry. Understand this incurable disease and what researchers are doing to fight it.
Hiring a Certified Arborist in the Midwest: What to Look For and Expect
Not all tree care companies are equal. Learn what ISA certification really means, the right questions to ask, red flags to avoid, and typical costs for arborist services across the Midwest.
How to Water Trees Properly: A Seasonal Guide
Most trees die from improper watering — either too much or too little. This seasonal guide covers how, when, and how much to water trees throughout the year for optimal health.
Understanding Tree Root Systems: Why Roots Matter
Most people never think about tree roots until something goes wrong. Learn how root systems actually work, why they matter for tree health, and how to avoid the common mistakes that damage them.
Integrated Pest Management: A Sustainable Approach to Tree Health
IPM combines biological, cultural, and chemical tools to manage tree pests effectively while minimizing environmental impact. Learn how this science-based approach works.
How to Choose the Right Tree for Your Yard
Selecting the right tree for your property is one of the most important landscaping decisions you can make. This guide walks you through climate, soil, size, and purpose considerations to help you choose wisely.
The Complete Guide to Tree Mulching: Do's and Don'ts
Mulching is one of the best things you can do for your trees — but done wrong, it can cause serious harm. Learn the proper techniques, materials, and common mistakes to avoid.
How to Tell If Your Tree Needs to Be Removed: 10 Warning Signs
Not every struggling tree needs to come down, but some pose real safety risks. Learn the 10 warning signs that indicate a tree should be removed — and when a professional assessment is essential.
Sudden Oak Death in California: Current Status and Management
Sudden oak death continues to spread through California and Oregon forests, killing tanoak and several oak species. Get the latest on affected areas, identification tips, and management strategies.
Hurricane Season Tree Preparation Guide for the Southeast
Properly prepared trees are far more likely to survive hurricane-force winds. This guide covers essential steps for homeowners in Florida, Georgia, the Carolinas, and Texas to protect trees and property before storm season.
Pine Bark Beetle Outbreaks in the Western US
Pine bark beetles have killed billions of trees across Colorado, Montana, California, and Oregon. Understand the causes behind these massive outbreaks and what can be done to protect surviving forests.
Citrus Tree Care in Florida: Common Diseases and Prevention
Florida's citrus trees face serious threats from citrus greening, canker, and other diseases. Learn how to identify symptoms early and protect your backyard citrus with proven prevention strategies.
Spotted Lanternfly Spreading in the Northeast: What You Need to Know
The spotted lanternfly continues its rapid spread across the Northeast. Learn how to identify this invasive pest, which trees it threatens, and what homeowners in PA, NJ, NY, CT, and DE can do to fight back.