If you mulch heavily as recommended in the compost and mulch fact sheets you should not need traditional fertilization. Sustainable landscapes fertilize themselves as soil organisms break down and recycle the dropped leaves into nutrients.
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Designer: Confidence Landscaping
Photographer: Amy Palmer
Physical weed control, including mulching, or hand removal protects the watershed from harmful chemicals.
Remove irrigation water and fertilizer from areas where you don't want weeds to grow.