What Not to Compost

To avoid problems with odors, pests, reseeding, or slowing down the compost process, don’t put any of these items in your pile.

• Invasive weeds that spread by roots/runners — e.g. crabgrass, bamboo
• Weeds with seed heads (pull them before they set seeds)
• Meat, fish, dairy products, bones, fats, bread
• Large branches or pieces of wood
• Pressure treated woods
• Bar-b-que or coal ashes
• Dog or cat wastes
• Materials with thorns or spines-e.g. rose branches, cactus