An apparatus for protecting plants, trees, bushes, etc. from harsh environments when the ambient air temperature is below the lower tolerance limit for that species of plant. The apparatus consists of an envelope that covers the plant with a drawstring on the open end of the envelope that cinches around the base of the plant. Installed in envelope is a blower and heater that heats and circulates air throughout the envelope, creates a micro-environment within the envelope that is above the lower tolerance limit for that species of plant, keeping the plant from being harmed by the outside environment.