Extension > Garden > Diagnose a problem > What's wrong with my plant? > Deciduous > Dogwood > Small, cottony masses on twigs and branches
Dogwood > Stems/branches > Small, cottony masses on twigs and branches
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Cottony maple scale
Pulvinaria innumerablis
- Cottony egg sacs look like popcorn on twigs
- Large amounts of honeydew is produced
- Sooty mold colonizes the honeydew producing blackened appearance on leaves, twigs and ranches
- Dieback of twigs and branches may occur when large numbers of cottony maple scale are present
- More information on Cottony maple scale
