A plant skirt provides a weed barrier system that is easy to construct and install, and virtually eliminates weed encroachment. The plant skirt comprises a barrier member having a substantially flat body constructed from landscaping material and having an outer rim edge. The body includes a weighted edge perimeter, wherein the perimeter is constructed having sand therein. At least one edge area of the body has a weighted edge perimeter including an elongated slit. The elongated slit extends to and terminates at a center aperture in the flat body. The elongated slit has overlapping capable sides, and the center aperture is a small opening appointed to surround a plant's stem so that the stem is flush against the center aperture and a weed cannot easily grow between the center aperture and the stem.