Abstract: Underwater weed cutter that includes a front base plate or mounting member that pivotally mounts a pair of blade mounts for movement between a weed cutting position extending diverging rearwardly and a generally parallel storage position, the blade mounts mounting the blades to be on remote side edges of the mounts when the mounts are in a weed cutting position and adjacent one another when the mounts are in a storage position, an elongated back brace that is connected at its opposite ends to portions of the blade mounts remote from the mounting member when the cutter is in a weed cutting position, a pair of parallel runners having one ends connected to the brace in transverse spaced relationship and opposite ends pivotally connected to the respective mount when the cutter is in a weed cutting position, a combination weed deflector and runner, a handle mount assembly pivotally mounted on the front member for movement between a weed cutting position and a storage position, and a handle mounted by said assembly