Hosts:

Hemlock woolly adelgid hosts include spruce, yeddo spruce, tiger-tail spruce, eastern hemlock, Carolina hemlock, Chinese hemlock, Japanese hemlock, western hemlock, mountain hemlock, and southern Japanese hemlock.

 

Commodities Affected:
Forestry and Natural Areas, Nursery, Ornamentals, and Turf

 

Threat:

In its native range within Asia, hemlock woolly adelgid is not a very serious or destructive pest. Population levels are controlled by natural enemies and by host resistance. The hemlock woolly adelgid was first reported in western Canada (British Columbia), in the 1920's and in the United States (Virginia), in the 1950's. In the eastern U.S., all sizes and ages of eastern hemlock, and Carolina hemlock are susceptible to hemlock woolly adelgid infestations. In British Columbia, damage to western hemlock has been minor.

 

Distribution:

The hemlock woolly adelgid is not known to occur in Indiana.