Cuttings of most herbaceous house and greenhouse plants are made from the soft growing tips that will snap off when bent at the point where roots are to form. While a bud at the base is no disadvantage, and may be a gain, no attention is paid to this in practice. If too much leafage, a part is cut away. They are stuck deep enough in the bench sand to hold them erect.
Cuttings are also rooted of such shrubs as weigelia, roses, hardy hydrangea, and lilacs. With such plants the cutting is made with a bud at the base and a large part of the leafage is cut away. It is found best also to use the small side shoots that can be cut off so as to leave a little ring of half-ripened wood at the base. In preparing these slips a very sharp knife should be used and they should be prepared in shady quarters and stuck about as rapidly as prepared. Fig. 30 shows a rose and hydrangea cutting with the leaves cut off or divided. If quite pure freshwater stream sand is used with needed bottom drainage, there is little danger of using too much water, as such sand will only retain a certain amount. As soon as roots have pushed an inch into the sand the cuttings should be potted in good soil.
Fig. 30. - A, rose cutting ; B, hardy hydrangea cutting.