A binding machine for gardening includes a binding machine main body, a clincher arm rotatably attached to the binding machine main body and configured to draw a tape out of the binding machine main body and to bind an object to be bound which is wound by the tape, and a cutting portion configured to cut the tape to be bound by the clincher arm. The cutting portion includes a blade configured to cut the tape and a lock mechanism configured to fix the blade at a predetermined position of the binding machine main body.
