Thursday, April 26, 2007


Compost coffee, originally uploaded by mike1727.

Composting is a good thing (tm), pretty much all our veg waste, paper towels etc get chucked in a dustbin which I add to the heap once it's full. A couple of weeks ago we had a semi-annual purge of old paperwork which needed shredding and therefore wouldn't go in the recycling. Rashly, I put the lot in the compost- a good 2 bin bags full. This was rapidly followed by a load of kitchen waste and a lawn's worth of grass clippings to try to rebalance the green:brown ratio , in order to avoid a stinky mess of sludge at the bottom of the garden.

The Starbucks concessions at work give away their used coffee grounds for composing, so I picked up a couple of bags, mixing coffee into the pile in the hope of getting everything cooking nicely. The following day the compost felt warm to the touch, so I shoved the greenhouse thermometer into the middle of the pile to check...85 degrees F. Not bad. The pile was steaming when I added another six bags last night so I'm doing something right. There's still some way to go before I get to the 150F or so required to kill weed seeds, but it's a good start.

The Starbucks Coffee Compost Test- chemical analysis of soil nutrients in used coffee grounds.

Starbucks page on coffee composting

YouTube video (Which I've not watched yet, so don't blame me if it's crap

Bike training note- riding home with 8 kilos of coffee grounds in your rucksack is good training. Now I need to see if I can get away with storing tens of bags of coffee in my cupboard at work ready for a single trip with the bike trailer...

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