FIG. 1 shows a perspective top, front and first end view of a flexible garden edge incorporating the design of the present invention; FIG. 2 shows a front elevation view thereof; FIG. 3 shows a top plan view thereof; FIG. 4 shows a first end view thereof; FIG. 5 shows a second end view thereof; FIG. 6 shows a rear elevation view thereof; and, FIG. 7 shows a bottom plan view thereof.