Box is a formal, but charming, edging. "The growth must be regularly clipped each year. Stretch a line the whole length of the edging, so as to show the correct height; then cut evenly and neatly both at top and sides. When relaying, take up the plants, pull them to pieces and use the strong young growths, which must be clipped to one level. Box is easily grown and stands pruning with impunity." Such is the advice of an authority. Another practical gardener says: "Most amateurs clip box-edgings early in the Spring. This causes an early growth, which is just in the condition to be nipped by a sharp, late frost. The safeguard is to delay clipping until the end of August. Then comes free, healthy growth, which renders box-lined garden paths cheerful and pleasant to the eye through times of heat and drought."
Thrift (Armeria) is one of the best edgings as it is green all the year round and in summer is covered with bright pink flowers. A flower-lover says:
"Thrift is seen as an edging in many old English gardens. To preserve its beauty the plants must be lifted, divided and replanted once in at least four years: a rich even growth is then the reward. The tufted habit, fresh green growth and rose-purple flowers in Summer are enjoyable to look at."
Thrift requires frequent trimming.
London-pride (Saxifraga umbrosa) is very pretty when in flower and, therefore, makes an attractive edging.
Pansies also form a decorative edging for flower beds, large and small.
Another charming edging is the carnation, especially the white varieties. The gray-green foliage makes a beautiful border for flower-beds. Pinks are pretty, too, for bed edgings, and the sweet-william is also attractive for this purpose.
XIX
Knots
The knot should occupy a piece of ground from twenty-five to one hundred feet square. According to "The Gardener's Labyrinth" "the flower-bed should be kept to the size that the weeder's hands may well reach into the middest of the bed." The size given in this manual is twelve feet by six, "each bed raised one foot above the ground (two feet in marshy ground) and the edge cased in with short planks framed into square posts with finials at the angles with intermediate supports." A prettier method, however, is to border the flower-bed with an edging of box, thrift, pansies, or pinks. This border outlines the shape of the knot. Within the edging, or border, "the flowers are all planted in some proportion as near one into another as it is fit for them, which will give such grace to the garden that the place will seem like a tapestry of flowers."