An impermeable sectional apparatus for soil moisture retention has a frustoconical member separable along a medial longitudinal axis into a first section and a second section for connection around a plant to inhibit evaporation from the soil matrix. Securement of the first and second sections together is effective by mating engagement between each of a first male edge with a second female edge and a first female edge with a second male edge. A plurality of rectilinear insert sections is fittable in between each of the first and second sections engaged by edgewise interconnection therebetween, whereby the frustoconical member may be elongated to cover more ground surface. Additionally, a polychromic material is included devised to signal a color change to a user in response to an environmental stimulus.
