. The nursery-book; a complete guide to the multiplication of plants . 21). Covered layer of viburnum (x 1-6). continuous, as in Fig. 29, or it may be applied only to thejoints or restricted portions of the shoot, as illustrated inFig. 30. In either case the covering should be shallow, notexceeding 2 to 5 inches. If the shoot is stiff, a stone or sod SERPENTINE LAYERING. 37 crotched pegging may be placed upon it to hold it down; or astick may be thrust down over it, as in thedown of propagators. The strongest plants are usually obtained by securingonly one plant from each shoot, and for this p
. The nursery-book; a complete guide to the multiplication of plants . 21). Covered layer of viburnum (x 1-6). continuous, as in Fig. 29, or it may be applied only to thejoints or restricted portions of the shoot, as illustrated inFig. 30. In either case the covering should be shallow, notexceeding 2 to 5 inches. If the shoot is stiff, a stone or sod SERPENTINE LAYERING. 37 crotched pegging may be placed upon it to hold it down; or astick may be thrust down over it, as in thedown of propagators. The strongest plants are usually obtained by securingonly one plant from each shoot, and for this purpose theearth should be applied only at one point, preferably over abud somewhere near the middle of the shoot. If the budsare close together, all but the strongest one may be cut out. I. ji ((■ JO. Layered shoots. If more plants are desired, however, serpentine layeringmay be practiced, as shown at A in Fig. 30. The shoot isbent in an undulating fashion, and from every covered por-tion roots will form and a plant may be obtained. Thecontinuously covered layer also possesses the advantage ofgiving more than one plant, but the roots are apt to form socontinuously that definite and strong plants are rarely ob-tained ; these rooted portions may be severed and treatedas cuttings, however, with good results. The grape issometimes propagated by serpentine layering. Stiff and hard-wooded plants do not often strike or D 38 LAYEEAGE. root readily, and in order to facilitate rooting, the branch is wounded at the point where it is desired that roots shall form. This wounding serves to induce formation of adven-
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