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Photographer: GardenSoft
Physical weed control, including mulching, or hand removal protects the watershed from harmful chemicals.
Make sure ponds and water features aren't leaking, splash out is minimized, and water for streams and waterfalls is recirculated.Keeping water surface areas small and partially shaded will also reduce evaporation.
Attract, or buy beneficial insects such as ladybugs and lacewings to control pest outbreaks in your garden.