ID Trees 28-Tree diseases and Insects Exams
Part 1 QUESTIONS & ANSWERS BEST
EXAM SOLUTION LATEST UPDATE
2025/2026 RATED A+
Dutch Elm Disease - CORRECT ANSWERS A disease carried by Elm Leaf Beetle. Discovered in the
1930s'. Former epidemic; treatable as of the 1990s'. Affects American and Slippery Elms.
Elm yellows - CORRECT ANSWERS A diseased carried by the Leafhopper. Discovered in 2008.
Epidemic; no known cure present. Affects American and Slippery Elm trees in the Great Lakes States and
the midwest from western New York south to Ohio and Kentucky west to Illinois and north to Wisconsin
and Michigan.
Emerald Ash Borer - CORRECT ANSWERS A metallic green Asian insect accidentally imported in
the 1990s' and was first discovered in North America in 2002. Has been reported in 18 US states.
Epidemic; no treatment present. Affects all Ash (Fraxinus) species.
Agrilus planipennis
Spruce and Pine Beetles - CORRECT ANSWERS Beetles that damage pine and spruce trees.
Examples: Southern Pine Beetle affects Loblolly, Slash, Longleaf, Shortleaf, Pitch, Virginia, and Red Pines.
Spruce Beetle damages or even destroys Red, White, Black, and Blue Spruce trees. Disease is now
treatable as of the 1990s' and 2000s'.
Oak Wilt - CORRECT ANSWERS A fungal infection that affects White, Northern & Southern Red,
Willow, Black, Post, Bur, Shingle, Cherrybark, Pin, and Scarlet Oaks. Causes the leaves to droop. Disease
is treatable.
Canker - CORRECT ANSWERS A disease that eats the tree from the inside out. Also known as
anthracnose. Dogwood Anthracnose, Aspen Canker, Maple Anthracnose, Plane Anthracnose, Willow
Anthracnose, and Butternut Canker are examples of cankers. Some cankers such as Dogwood
Anthracnose and Plane Anthracnose are treatable.
Part 1 QUESTIONS & ANSWERS BEST
EXAM SOLUTION LATEST UPDATE
2025/2026 RATED A+
Dutch Elm Disease - CORRECT ANSWERS A disease carried by Elm Leaf Beetle. Discovered in the
1930s'. Former epidemic; treatable as of the 1990s'. Affects American and Slippery Elms.
Elm yellows - CORRECT ANSWERS A diseased carried by the Leafhopper. Discovered in 2008.
Epidemic; no known cure present. Affects American and Slippery Elm trees in the Great Lakes States and
the midwest from western New York south to Ohio and Kentucky west to Illinois and north to Wisconsin
and Michigan.
Emerald Ash Borer - CORRECT ANSWERS A metallic green Asian insect accidentally imported in
the 1990s' and was first discovered in North America in 2002. Has been reported in 18 US states.
Epidemic; no treatment present. Affects all Ash (Fraxinus) species.
Agrilus planipennis
Spruce and Pine Beetles - CORRECT ANSWERS Beetles that damage pine and spruce trees.
Examples: Southern Pine Beetle affects Loblolly, Slash, Longleaf, Shortleaf, Pitch, Virginia, and Red Pines.
Spruce Beetle damages or even destroys Red, White, Black, and Blue Spruce trees. Disease is now
treatable as of the 1990s' and 2000s'.
Oak Wilt - CORRECT ANSWERS A fungal infection that affects White, Northern & Southern Red,
Willow, Black, Post, Bur, Shingle, Cherrybark, Pin, and Scarlet Oaks. Causes the leaves to droop. Disease
is treatable.
Canker - CORRECT ANSWERS A disease that eats the tree from the inside out. Also known as
anthracnose. Dogwood Anthracnose, Aspen Canker, Maple Anthracnose, Plane Anthracnose, Willow
Anthracnose, and Butternut Canker are examples of cankers. Some cankers such as Dogwood
Anthracnose and Plane Anthracnose are treatable.
