Gardening Columnist Don Kinzler answers questions about treating spruce trees with winterburn, when to remove burlap wraps from evergreen trees, and if it's OK to trim an apple tree with a chainsaw.

Burlap is best used to erect a vertical screen or fence around a shrub to protect it in winter, rather than wrapping the fabric around its leaves and branches.

With memories of boxwoods ravaged by last January’s bitter cold spell, many gardeners are trying to protect shrubs this winter by wrapping them in burlap. “That can do more harm than go… ...