| Problems of River Birch |
| Symptoms |
Probable Causes |
| Tree branches break |
Winter Damage |
| Tree dies suddenly |
Old Age |
| Leaves scorch; turn tan; dry appearance |
Leaf Scorch |
| Leaves curled and distorted |
Aphids |
| Black powdery sooty mold fungus forms on honeydew; branches may die if problem continues |
Ants Herding Aphids For Their Honeydew |
| Small holes in bark and stems surrounded by sawdust |
Bronze Birch Borer |
| Tip of leaves brown, internal larvae trails visible. Sometimes leaves skeletonized and rolled up |
Birch Leafminers |
|
|
|
|
| Leaves stippled, yellowing or bronze; dry out and (drop)may be webbing visible; sometimes galls form on leaves |
Seed Mites |
| Branches encrusted with small bumps |
Scale |
| Water-soaked lesions on branches |
Canker, A Bacterial Disease |
| (Continued) |
|
| Upper branches dead |
Dieback, A Fungal Disease |
| Shelf-like growths on trunks |
Wood Rot, A Bacterial Disease |
| Leaves blistered and curled up |
Leaf Blister, A Fungal Disease |
| Leaves spotted; turn brown |
Leaf Spot, A Fungal Disease |
| Leaves have powdery spots |
Rust, A Fungal Disease |
| On young trees foliage looks burned |
Dog Urine |
| Bark of stems and roots gnawed |
Mice or Voles
|
| When young portions of foliage disappear, or young tips disappear, bark peeled in strips |
Deer |
|
|
|
