A canopy sheet material for use over growing plants such as grape or berry or other fruit vines has higher water permeability in a longitudinally extending substantially center lengthwise part (33) than in lengthwise side parts (34). In use rain falling on the canopy runs down the side parts (34) and drains through the center part (33) to approximately the center of each tree or vine which keeps water away from the fruit under the less water permeable side parts (34).
