Mar. 29—Every year, John Formby spends weeks flying in a plane above New Mexico's forests, looking for trees with signs of insect damage and stress from heat and drought. The state forest health ...

Plant trees and shrubs at least 6 to 8 weeks before the expected first fall frost. Water new trees and shrubs regularly and deeply until the first frost and mulch well. Install tree guards and tree ...

In Finland, forest stands damaged by the European spruce bark beetle (Ips typographus) tend to concentrate in groups and form clusters, especially in mature Norway spruce forests close to previous ...