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Photographer: Vicki Anderson
Physical weed control, including mulching, or hand removal protects the watershed from harmful chemicals.
Adjust the water pressure of you irrigation system.Spray sprinklers work best at 30 pounds per square inch (psi), and gear and impact rotor sprinklers at 40-60 psi.
Drip and other smart irrigation delivers water directly to roots, allowing no excess water for weeds.