This section is from the book "The Gardener's Monthly And Horticulturist V23", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
The American arborvita? is most planted here, but I think is not the best in all respects The Siberian is more hardy, requires less trimming, is of a finer shade of green, and the plants are not much higher priced. But of all that I have seen none equal the hemlock, where the soil is adapted to it. White spruce bears the shears nicely, and if planted when small and of good shape will make a strong, enduring and compact hedge, and they are especially valuable as a wind-break. The winds and storms of winter have little effect on them, and snow and ice do not break the little twigs which so often cover the ground after a severe storm, as is the case with the Norway spruce. I have seen an excellent hedge of the Norway planted when small and about one foot apart. The growth was but a few inches a year, and they were easily kept in their proper limits. Indeed, many planters err in planting too large trees and too far apart. Young, thrifty plants, eighteen inches, and planted twelve to sixteen inches apart, do the best.