.
Tree planting (artificial regeneration) generally is not
necessary in Pennsylvania. Through the use of
acceptable silvicultural practices, most of Pennsyl-
vania’s forests will regenerate naturally from seeds or
sprouts. Studies show that naturally regenerated trees
usually grow faster and survive better than planted
trees. However, trees may have to be planted to
reforest former strip mine sites, old fields, conifer
plantations, and areas where insects or diseases have
killed all the seed-producing trees.