The present invention relates to a binding machine (10) for gardening. An operation handle (50) of the binding machine (10) includes a link portion (52) engaged with a main handle (11) on one side as viewed from a rotation fulcrum (51a) and a lever operation portion (55c) on the other side as viewed from the rotation fulcrum (51a). A clincher arm (30) is configured to rotate in a closing direction with respect to the main handle (11) when the lever operation portion (55c) and the main handle 11() are gripped. The binding machine (10) for gardening further comprises a cover member (55) configured to cover the link portion (52).