The trees may also grow to be prone to spider mites; treat the mites with insecticidal soaps or oils. It's also susceptible to many kinds of beetles that bore to the trunk and introduce rot. A Harvard Forest Study report in 1936 documented an extra fifty eight Norway Spruce plantations https://lorenzoblpsx.izrablog.com/31234368/getting-my-spruce-lumber-for-sale-to-work