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  • The Green Cone
  • Find the Green Cone
  • Francais
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The Green Cone
a Food Waste Digester, not a composter...

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The Green Cone works quickly to digest almost all organic waste with minimal effort on your part.  It's double walls heat up in the Sun and cycle warmed air to the chamber below which is humid and connected to the surrounding soil. This is the perfect microsystem for the natural processes of digestion, decomposition and dehydration. Doing all three aerobically (with oxygen) reduces possible odours and means that the Green Cone can handle the full spectrum of organic waste unlike a regular composter which is best used for only fruit, vegetable and garden waste.

System Features

The Green Cone was invented in 1988 just North of Toronto and patented in 1991. The goal was to sustainably and efficiently get rid of kitchen waste without interference from animals.
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Original Patent Diagram
The Green Cone Food Waste Digester​ Quick Facts 
Pro's
  • Manages the full spectrum of kitchen waste including meat-scraps,  dairy, oil, seafood scraps and even pet waste
  • Compliments a composter which is best for veg/fruit/garden waste. Green Cone can handle fruit and veg very well- it just may reach capacity sooner 
  • Doesn't need stirring or frequent emptying
  • Enclosed and secure: holds in smells
  • Squirrel and Raccoon-proof
  • Uses aerobic digestion (not smelly) by millions of micro- organisms
  • Removes kitchen waste from landfill and keeps garbage smaller, lighter, drier and smelling better. Can reduce household waste by 25%-40%!
  • No transportation costs/emissions from Municipal truck pickup
  • Delivers compost tea to surrounding soil, flowers, trees and hedges​
  • Can be used in a container (needs drainage)
  •  Manufactured from very durable and mostly recycled plastic. 
Cons
  • slows down in the winter. Households with a lot of food waste should try to create less! But, may need to use multiple Green Cones
  • fruit flies...they sometimes come on fruit from the store. They may get into the Cone but...they will help digest food waste faster!

In a sunny spot with good drainage the Green Cone can digest  1+ kg. or 2+ lbs. every few days in the summer. Digestion slows down near freezing as bacteria hibernate during deep winter. One can continue to add to the cone (and a second cone) and it catches up come warmer weather. 

Capacity can be estimated at roughly  4 kg. or 10lbs. a week with correct usage, in full sun, with great drainage, during the summer.

Frequently Asked Questions

  
​How does it work? Where does organic waste go?
​Many types of bacteria, fungi, micro-organisms, insects and worms help consume and break down the cell structures in the kitchen waste and, over time, much of the volume in your Green Cone will also be absorbed by the surrounding soil as nutrient rich water. One may have to empty the cone periodically if you're very heavy users. If the Green Cone is used sparingly (or alongside a veg/fruit black composter) it may not ever have to be emptied! 

How much can it handle? 
The Green Cone's capacity is about 4 kg or 10lbs/week max.   Digestion slows down as the temperature drops below freezing This being said, decomposition does create it's own heat, the basket is insulated & underground AND the Sun re-heats the Cone every day. Good Sun and great drainage help to maximize efficiency. One might use a composter for all fruit and veggie waste to save space in the specialized Green Cone for meat-scraps, bones, oils, grease, some seafood scraps, dairy, pet waste, etc. thereby creating compost and also saving space in the Green Cone. 

What about the cold?
The Cone does slow down in the cold. You can add accelerator powder (included) or bran flakes to help it in colder temps and there is  sufficient room in the chamber to accommodate quite a bit of waste until digestion can catch up come spring. Some larger families in northern climates place two+ cones together and fill one all winter and then switch to the other come spring. 
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More on 'How it Works', Users Manual and Installation help.
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INSTALATION HELP 
GREENCONE USERS MANUAL(Original)

Tips for dealing with Bears. 
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Tips for Stopping Rats and Small Animals in their tracks.

The Compost Gardeners    excellent description of decomposers: Bacteria Engines of Earth's Nutrients Cycles ​

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