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  2. Diagnose By Tree Species
  3. Maple (Acer)
  4. Canopy
  5. Select Suspected Cause
Glossary

Select Suspected Cause

Armillaria Root Rot

Armillaria Root Rot
(Armillaria spp.)
Bacterial Leaf Scorch

Bacterial Leaf Scorch
(Xylella fastidiosa subsp. Multiplex)
Black Twig Borer

Black Twig Borer
(Xylosandrus compactus)
Drought

Drought
     
Fall Webworm

Fall Webworm
(Hyphantria cunea)
Greenstriped Mapleworm

Greenstriped Mapleworm
(Dryocampa rubicunda)
Herbicide Damage

Herbicide Damage
     
Improper Planting

Improper Planting
     
Improper Pruning

Improper Pruning
     
Japanese Beetle

Japanese Beetle
(Popillia japonica)
Leaf Scorch

Leaf Scorch
     
Leaf Spots (Maple-Sycamore)

Leaf Spots (Maple-Sycamore)
(Rhytisma acerinum)
Leafy Mistletoe

Leafy Mistletoe
(Phoradendron tomentosum)
Lightning Damage

Lightning Damage
     
Linden Looper

Linden Looper
(Erannis tilaria)
Mechanical Damage

Mechanical Damage
     
Nutrient Deficiency

Nutrient Deficiency
     
Overwatering

Overwatering
     
Phytophthora Root Rot

Phytophthora Root Rot
(Phytophthora spp.)
Pinkstriped Oakworm

Pinkstriped Oakworm
(Anisota virginiensis)
Powdery Mildew

Powdery Mildew
(Oidium sp.)
Soil Compaction

Soil Compaction
     
Structural Root Rot

Structural Root Rot
(Ganoderma sp.)
Underwatering

Underwatering