Extensive damage to newly planted forests is reported from all four northernmost counties.
Both pine and spruce are infested.
SVT accompanies the Swedish Forest Agency's staff to an affected area between Sundsvall and Härnösand.
In the video above you can see the damage in that area.
- It is major damage, states Magnus Martinsson at the Swedish Forest Agency.
Sorkår
The background is that it is a sorrel corps this year, a peak in the population that returns at regular intervals.
When it looks like it does in this forest area between Sundsvall and Härnösand, there is only one thing to do.
- To plant new forest, says Magnus Martinsson.
Forest owners must act
Forest owners are now urged to review their land.
If the damage is as extensive as here, you are obliged to remedy the problem.