It varies by insect, but if you're talking about the spruce budworm, four to five years of continuous defoliation would definitely kill trees.
On September 25th, 2018. See this statement in context.
On September 25th, 2018. See this statement in context.
September 25th, 2018 / 12:35 p.m.
Regional Director General, Canadian Forest Service, Atlantic Forestry Centre, Department of Natural Resources
It varies by insect, but if you're talking about the spruce budworm, four to five years of continuous defoliation would definitely kill trees.
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