6/15 Green is a public composting drop-off site. Local residents can recycle their kitchen scraps and organic waste in the garden during open hours or whenever the gate is open.  Public composting is a program designed to bring awareness to the surrounding neighborhoods about composting and its impact on our city.


Our composting program is supported by The New York City Compost Project hosted by Brooklyn Botanic Garden.  We are also supported by the Park Slope Food Coop, delivering greens and browns to our bins.


How to Compost at the Garden


  1. There are 3 bins in the back of our garden.  Place your greens into bin #1 (the bin on the left) and cover with browns (wood shavings, hay, manure, shredded newspaper) available in the steel bin next to the compost bins. If brown material is not available use unfinished compost from second bin.

  2. Mix together your compost with the compost in bin

  3. Make some air holes with tools available

  4. Top with a layer of browns


  • Please do not add water to the bin

  • Please chop up your waste before adding to the pile [small pieces compost faster].


The following material is compostable:


  • Chopped up fruit & vegetables

  • Potato peels, fruit rinds and cores etc. [please no large hard, seeds like mango, avocado or coconut]

  • Coffee grounds, paper filters, and tea bags without staples

  • Cut flowers [before they seed]

  • Garden weeds [except invasive weeds like mugwort, woody rose and the deadly yellow clinging vine a.k.a. strangle weed]

  • Grass clippings

  • Fresh leaves

  • Seaweed

  • Horse manure

  • Bread & grains

  • Food soiled paper towels, napkins and paper plates

  • Cotton balls, Q-tips, Shredded newspaper [except no shiny paper, no color print supplements]

  • Wood ash from untreated wood [no charcoal ash]

  • Dried leaves

  • Packing peanuts [the ones that dissolve in water not Styrofoam]

  • Animal fur, human hair, nail clippings

  • Dryer lint

  • Hay and straw

  • Eggshells

  • Old potting soil

  • Small branches cut into pieces 2″ or smaller 


Do not compost the following material:


NO mugwort or wood

NO animal products [chicken, bones, or fish, dairy, eggs, fats, oils or grease]

NO plastic, plastic, bags, twist ties, rubber bands etc.

NO cat or dog waste

NO large fruit seeds like avocado, mango, coconut

NO thick wooden branches

NO thick stalks like sunflower, hollyhock [or prickly branches, like roses]

NO diseased plants

NO pesticide treated plants or grass

NO treated wood, sawdust or plywood, shavings.


Storage Ideas


Depending on your family size and eating habits, a shoe box size plastic container in your fridge keeps smell to a minimum. A bucket or large coffee can under the sink with newspaper, paper towels or finished compost in the bottom will cut down on smells by absorbing liquids. Composting a lemon a couple times a week will help keep the bucket smelling fresher. If you accumulate your compostables in the freezer, please bring it to the garden already thawed and dispose of the container.


The concept of composting is to return to the earth what we have harvested from her. If you think of it that way you’ll always know what to and what not to compost. Composting is the wonderful process that occurs naturally when the nitrogen in greens and the carbon in browns are mixed together and are transformed into rich, nourishing, soil-like substance.