Composting Information

Choose Your System
  • Yard debris pile
  • Worm bin for food scraps
  • Commercial composting bins/ tumblers or rotators
  • 3, or more, bin setup (wood, pallets, screening)
  • Wire cages
  • Garden trench or hole in the ground
  • Buried trash can
Compost Bins
Composting works faster if you mix “browns” and “greens” (3 parts to 1) with air and water. Chop or chip into smaller pieces (especially woody stems). Layer or toss together.
Browns (Bulking Agents)
  • Wood chips
  • Sawdust
  • Eggshells
  • Dry leaves
  • Straw
  • Paper and cardboard
Greens (Energy Materials)
  • Grass clippings
  • Weeds without seed heads
  • Vegetable / fruit scraps
  • Tea / coffee grounds
  • Manure and bedding
  • Yard trimmings
Do Not Compost
  • Diseased plants
  • Weed seeds
  • Dairy products
  • Vegetable oils
  • Meat / fish scraps, fat, or bones
  • Cat / dog/ pig wastes
Additional Resources
  • WSU Extension
    • Phone: 360-378-4414
    • Location:
      221 Weber Way Suite LL
      Friday Harbor, WA 98250
Composting Class