• Correct balance of brown and green materials (approx 60/40 mix)
• Air (created by turning the heap)
• Moisture either from green material, rain, or added water

There are three compost bins on the 90th Street side of the Garden, by the sheds. There are signs to indicate which compost heaps are designated to accept new material. Please chop up material into small pieces as it makes the heap easier to manage and will produce compost twice as quickly – a hot heap is a good heap!

Browns (high in carbon)

• dead flowers
• woody yard trimmings no longer than 6” or thicker than ½”
• straw
• corn stalks and husks
• a few leaves (dumping huge piles of leaves on the heap is counter-productive)
• untreated wood chips & sawdust
• shredded paper

Greens (high in nitrogen)

• grass clippings (untreated)
• plant & yard trimmings
• vegetable and fruit peels, cores and scraps
• egg shells (crushed please)
• coffee grounds, filters & tea bags

DO NOT ADD:

• diseased plants
• weeds that are heavily laden with seeds
• grease, fats, oily or cooked food
• barbecue briquettes
• meats, fish & poultry (attracts rats)