Compost

Winter Curbside Compost Collection

Ann Arbor's weekly curbside composting ended on Dec. 13, 2024. The city offers monthly pickup of compost carts as part of the winter composting program. Please visit our winter compost collection page for more information.

Residential Compost Carts

The city offers single-family residential properties one free 64-gallon compost cart.

The first 64-gallon compost cart is free to new customers, new construction or newly annexed properties.
Annual $44 fee to upgrade a cart to 96 gallon, which is added to the quarterly water bill.
One-time $55 fee for each additional compost cart at the same address, which is added to the quarterly water bill.
$61 fee for the delivery of additional carts, return of unwanted carts, or cart exchanges.
$29 to power wash ALL returned carts.
$84 to return to service each cart not set out on time.

To order a cart and arrange for pick up or delivery, please contact the customer service center at 734.994.7336 or via customerservice@a2gov.org.

Carts exceeding 224 pounds for the 64-gallon, or 336 pounds for the 96-gallon size will not be serviced.

What can I place in my compost cart?

Plate scrapings and food waste (including meat and bones)*
Grass clippings*
CMA-W certified compostable products*
Leaves and brush
Branches less than 6 inches diameter (must fit in cart with lid closed)
Unpainted, untreated lumber (must fit in cart with lid closed)
Weeds
Undecorated and cut up Christmas trees
Garden pruning, garden surplus, crab apples, etc.
Used, cool wood ashes make great garden and flower bed fertilizer. If you aren't able to use them there, then please place in compost cart.

*Items for compost carts only.

Plastic bags or containers
BPI certified or other "compostable" plastic like products
Bamboo or palm leaf products
Glass
Trash and recyclables
Dirt, rocks, stones or gravel
Sawdust
Branches over 6 inches in diameter or over 4 feet in length
Painted or treated wood
Animal waste or cat litter
Tree stumps
Diapers

Paper Yard Bags & Bundles

Paper yard bags and bundled brush/tree limbs can be used for yard trimmings such as leaves, weeds and other vegetation. From April through Oct. 7, there is a 10 bag per-property limit, which expands to 20 for fall leaf season starting on Monday, Oct. 7. Each bag must weigh less than 50 pounds.

Branches, tree limbs and brush are collected at the curb but must be under 4' in length. Brush and branches can be tied together in a bundle with natural twine not exceeding 18" in diameter. Individual tree limbs must not exceed 6" in diameter.

Participating residents must place their compostable material at the curb before 7 a.m. on their weekly waste collection day — at least 3 feet away from curbside carts. Bags should not be placed in lanes of travel, either roads or bike lanes, instead using yard extensions or buffer zones as directed.  

Dumping yard trimmings/waste in parks or other public places is not allowed. Please make use of the drop-off facility mentioned below.

Compost Facility & Drop-Offs

Ann Arbor's compost facility is located at 4170 Platt Road. The facility is operated by WeCare Denali, normally open weekdays 7 a.m. - 4 p.m. and Saturdays between April 13 and June 29, 7 a.m.–11 a.m. To drop off or purchase materials, visitors must utilize the automated scale system, which for contractors includes weighing in and out. Residents need only to weigh in, and may use the bypass lane to exit, skipping weighing out.

Residents can deliver 1 cubic yard per household per day of acceptable yard trimmings and food waste, at no charge, Monday through Friday, 7 a.m.–4 p.m., with a valid driver’s license showing a city address.

Acceptable Drop-Off Materials

Grass, leaves, other vegetation – must be clean and free of brush/wood
Mixed yard trimmings/brush/pallets (no plywood or OSB)
Wood chips – must be clean
Branches up to 6 inches in diameter, and up to 4 feet in length
Food waste – including meat & bones

Unlimited Leaf Drop-Off Season

The Ann Arbor compost facility will accept unlimited leaf drop offs from residents and their landscapers beginning Oct. 7 for the fall 2024 season. To drop off, visitors must provide verification of Ann Arbor residency. Leaves from properties outside the city of Ann Arbor do not qualify for this free service.

Materials for Sale

Compost
Natural wood mulch
Pallet mulch
Woodchips

Payments may be made by check or credit card only. Please call WeCare Denali at 410-849-6117 for current fees and pricing. No cash accepted.

Tips

Old grass clippings and food scraps can produce strong odors, especially during our hottest months. You can prevent odors by following these tips:

Sprinkle baking soda in compost cart and in your kitchen composter.
Store compost cart in the shade during warm weather..
Empty the contents of kitchen composter into your compost cart frequently.
Drain as much liquid as possible from food scraps before adding them to compost.
For extra-smelly food scraps: wrap in newspaper before placing in cart or put in the freezer until collection day.
Layer food scraps in between yard trimmings.
Rinse out kitchen composter and compost cart before materials build up.
Spray inside of compost cart with a vinegar and water solution.

For winter composting, the colder temperatures mean changing up how to put material in carts. To prevent materials from freezing to your cart, follow these tips:

Drain as much liquid as possible from food scraps.
Place an opened paper yard-waste bag inside of the compost cart to catch food scraps.
Place a couple pieces of flattened cardboard (1-2 large pizza boxes are perfect) at the bottom of the compost cart before adding waste. This buffer at the bottom of the cart allows the materials to slide out more easily and not freeze to the cart.
Place materials in a paper or CMA-W certified bag from the city's list and into your compost cart. It is advised that food scraps be double bagged during the winter to prevent them from freezing to the cart.
Wrap wet items (e.g., coffee grounds, melon rinds) in 1-2 sheets of compostable paper towels before placing into the compost cart.

If material is frozen to the cart when the city attempts service, it will not be serviced again until the first full week of the following month.

There are ways to manage yard waste without yard bags or compost carts! Here are a few alternatives to disposing of compost material at the curb:

Use a mulching mower to feed grass clippings and leaves back into your lawn.
Create a compost pile. Washtenaw County's composting webpage can teach you the basics of getting started.
Loose leaves can be left on the ground. They return nutrients to trees while providing cover for important pollinators, fireflies, and other insects.
Create a dead wood garden with limbs and branches you might otherwise discard. Even that old holiday tree you pulled out of your house could be used. These gardens not only fertilize the underlying soil, they become homes for beneficial insects, birds and fungi.
Consider replacing your grass with a rain garden stocked with native plants! This means no mowing and little maintenance. Rain gardens have the added benefit of capturing pollution before it entering our streams and rivers, as well as helping replenish groundwater supplies. As a bonus, adding a rain garden can help you save money by making you eligible for a stormwater credit!

Leaf Burning: Illegal & Bad for Human Health

Burning leaves produces particulate matter that is harmful to human health and the environment. The State of Michigan and City of Ann Arbor law make it illegal to burn leaves within city limits.