In the preferred embodiment the top support member of the stake is X-shaped. In this way, the top support member consists of a larger surface area and, in turn, a greater amount of rigid plastic material. Therefore, greater force may be vertically applied to the stake while driving the stake into the ground without destroying the structural integrity or damaging the stake. In this regard, any number of shapes
may be used, such as a circle, as long as the stakes may still be vertically engaged in an effective manner so as to form a continuous top support member upon which the mounting column of the support bracket may effectively be secured.