Tree Health News & Expert Tips
Outbreak alerts, seasonal care guides, and expert advice from ISA Certified Arborists to keep your trees healthy.
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.
Read more →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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.