The Garden Under Glass

3Ö2 THE GARDEN UNDER GLASS Root-bound.—See Pot-bound. Root-prune.—To cut off the roots of a tree which has been growing too vigorously. Peach-trees are very prone to make much growth in their young stages, until they get into bearing. This can only be checked by lif ting the tree and cutting off any thick fibreless roots there may be. Often the very faet of lift-ing a tree gives it a check sufficient to stop its exuberant growth. Root-pruning is best done in the autumn after the leaves have fallen. Rose.—A sprinkler on a water-pot for the purpose of spread-ing the water over a wider area and preventing it from falling heavily on to the plants is called a rose. It is necessary to use a rose for plants that are newly potteel until the soil has set firmly enough to allow the open spout to be used. Rough-leaf.—A plant grown from seed usually gives at first two leaves which are known as seed-Ieaves, and which are unlike the ordinary leaves of the plant. Afterwards the leaves become of the normal shape. These are known as rough-leaves. Some growers delay pricking off plants till the rough-leaf appears, but under skilful treatment this precaution is wholly unnecessary. Rust.—See page 297. Scald.—Marks on leaves caused through being burnt by the sun. See page 299. Seed-leaves.—The first leaves which appear on a plant grown from seed. They contain nutriment to carry the plantiet along until sufficient roots are made to enable it to draw its sustenance from the soil. Setting.—The transition from the flower to the fruit is termed setting, and it is generally applied to artificial fertilisation, as in the case of fertilising strawberries and tomatoes by brushing them lightly with a rabbit's tail. Shank.—See page 300. Shoulder.—The groups of berries on the upper portion of a bunch of grapes which spring from the central stem of the bunch in the form of a branch are called the shoulder. These