An apparatus to promote plant growth in vast desert areas is disclosed. The apparatus comprises a blocking plate pivotally jointed to at least two support posts. The blocking plate is operated by an electrical motor to turn wheels secured to a rotary rod to extend or pull back cables connecting the blocking plate and the wheels in order to swing the blocking plate between an approximately horizontal position and one or two approximately vertical positions in order to protect the plants underneath and promote plant growth. The apparatus can include a solar cell layer in the blocking plate, or attach a wind turbine at the top of one of the support posts to generate electrical energy from the extreme desert sunlight and windstorm. Further, rain gutters can be formed onto the blocking plate to collect and distribute rainwater.