A grafting knife has a handle 2 with a depending head 3 which is pivotally connected to a blade 5. The blade 5 has a generally v-shaped cutting portion 6 the side limbs of which are connected to a respective planar wing 9, the wing 9 having an operative leading edge 11 curved upwardly toward the handle for assisting motion of the wings over a stem to be cut. The planar wings facilitate an evenly cut groove and the pivotal blade permits selectively variable depths of groove to be cut.
