Wisteria, Chinese
Symptom Cause  
Leaves wrinkled or curled; discolored, stunted, tend to fall off
Aphids
>
Leaves mottled; distorted
Mosaic Viruses
>
Vine fails to flower
Plant Too Young
>
Leaves covered with white powdery substance
Powdery Mildew
>
Leaves skeletonized
Rose Chafers
>
Leaves and branches encrusted with small bumps; stunted plant growth
Scale Insects
>