in gardening, is a method of grafting, commonly called grafting by approach; and is used when the stock intended to graft on, and the tree from which the graft is to be taken, stand so near, or can be brought so near, that they may be joined together. The branch to be inarched is to be fitted to that part of the stock where it is to be joined; the rind and wood are to be pared away on one side for the length of three inches, and the stock or branch where the graft is to be united must be served in the same manner, so that the two may join equally and the sap meet. A little tongue is then to be cut upwards in the graft, and a notch made in the stock to admit it; so that when they are joined, the tongue will prevent their slipping, and the graft will more closely unite to the stock. Having thus brought them exactly together, they must be tied with some bass, or worsted, or other soft tying; and then the place must be covered with some grafting clay, to prevent the air from drying the wound, and the wet from rotting the stock. A stake must be fixed in the ground, to which both the stock and the graft must be tied to prevent the winds from displacing them. When they have remained in this state for four months, they will be sufficiently united, and the graft may then be cut off from the mother-tree, observing to slope it close to the stock; and at this time there should be fresh clay laid all round the part. This operation should be performed in April or May, that the graft may be perfectly united to the stock before the ensuing winter.
Inarching is chiefly practised upon oranges, myrtles, jasmine, walnuts, firs, and some other trees which do not succeed well in the common way of grafting. But it is a wrong practice when orange-trees are designed to grow large, for these are seldom long-lived after the operation.