Pests & Diseases
Anthracnose on Rochester Shade Trees: Why Sycamore, Oak, and Ash Leaves Look Scorched in Spring
2026-06-25·7 min read
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Pests & Diseases
Pest and disease coverage for Upstate New York trees and shrubs: emerald ash borer, beech leaf disease, spotted lanternfly, oak wilt, and the fungal problems moving through the Rochester region, with what to do about them.
25 articles
Pests & Diseases
Aphids, Honeydew, and Sooty Mold: Why Your Rochester Tree Drips Sticky Sap and Turns Black
2026-06-25·7 min read
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Apple Scab on Rochester Crabapples: Why the Leaves Drop by July and How to Stop It
2026-06-25·7 min read
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Is Your Ash Tree Worth Saving? Emerald Ash Borer Treat-vs-Remove Cost Decision in Rochester
2026-06-25·7 min read
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Bagworms on Arborvitae and Spruce: The Hanging Cocoons Killing Rochester Evergreens
2026-06-25·7 min read
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Black Knot on Cherry and Plum Trees in Rochester: The Black Swollen Galls Explained
2026-06-25·7 min read
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Why Is My Blue Spruce Losing Needles? Rhizosphaera Needlecast in Rochester
2026-06-25·7 min read
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Boxwood Leafminer in Rochester: Blistered, Yellow Boxwood Leaves Explained
2026-06-25·7 min read
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Orange Spots and Spiky Galls: Cedar-Apple Rust on Rochester Apples, Crabapples, and Junipers
2026-06-25·7 min read
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Cytospora and Nectria Cankers on Rochester Trees: Sunken Bark, Oozing Wounds, and Branch Dieback
2026-06-25·7 min read
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Diplodia Tip Blight on Rochester Pines: Why Austrian and Scotch Pine Tips Are Browning
2026-06-25·7 min read
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Eastern Tent Caterpillar vs Fall Webworm: Telling Rochester's Web-Making Pests Apart
2026-06-25·7 min read
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Fire Blight on Rochester Pears and Crabapples: The Shepherd's Crook Warning Sign
2026-06-25·7 min read
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Hemlock Woolly Adelgid in the Finger Lakes: Saving Your Eastern Hemlocks
2026-06-25·7 min read
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Japanese Beetle Damage on Rochester Trees and Shrubs: Why Leaves Look Like Lace
2026-06-25·7 min read
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Maple Leaves With Black Spots in Rochester: Is It Tar Spot or Something Worse?
2026-06-25·7 min read
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Oak Wilt in New York: Is It Near Rochester, and How to Tell Why Your Oak Is Dying
2026-06-25·7 min read
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Soft Scale on Rochester Trees: White Bumps, Black Mold, and Sticky Leaves on Magnolia, Maple, and Oak
2026-06-25·8 min read
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Spongy Moth (Formerly Gypsy Moth) in Upstate NY: Defoliation and Outbreak Years
2026-06-25·7 min read
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Spotted Lanternfly in Rochester, NY: What Homeowners Should Watch For
2026-06-25·8 min read
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Why Are My Maple's Branches Dying One at a Time? Verticillium Wilt in Upstate NY
2026-06-25·8 min read
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Viburnum Leaf Beetle in Monroe County: Why Your Viburnum Leaves Are Skeletonized
2026-06-25·7 min read
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When to Call an Arborist for a Tree Insect Problem in Rochester (vs DIY)
2026-06-25·7 min read
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Beech Leaf Disease in the Rochester Area: Signs and What to Do
2026-06-14·8 min read
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Emerald Ash Borer in Monroe County: How to Spot and Stop It
2026-06-13·8 min read
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