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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Photographer: GardenSoft
Practice grass-cycling by leaving short grass clippings on lawns after mowing, so that nutrients and organic matter are returned to the soil.
Remove irrigation water and fertilizer from areas where you don't want weeds to grow.
