How to make a microbe pile in the city

Cultivate community:

coffee shops/roasters (grounds, chaff)

beer brewers (beer mash)

grocery stores (cracked seeds, grains, legumes)

tree trimming and removal companies, utilities, city agencies (wood chips)

residential and common areas with trees (leaves, branches, wood chips)

residential and common green areas (grass trimmings, weeds)

residential and commercial locations that get packages (cardboard, some paper)

Grow your own:

plant alfalfa early spring, harvest as hay

plant and cut early clovers

cut all weeds at base, mow grass and gather clippings

Collect tools/equipment:

2 wood pallets

hardware cloth ¼ or ½” mesh 3’x11’ or geobin plus hardware cloth to cover pallets

bungee cords

composting thermometer 3’

heavy canvas tarp 6’x8’

manure/pitch fork

40 5-gallon buckets

Plan for microbe pile:

Site prep—water source nearby (and a way to filter or treat for chlorine), flat area

Collect and measure materials listed above in proportion: 4-6 buckets high N, 12 buckets green, 24 buckets browns

Day before microbe pile making day: put all materials into 40 buckets and soak

Microbe pile making day: allow half-day to put pile together

Set aside time daily for checking pile temps at least once/day for at least 2 weeks

Plan on 2 hours at least twice during first 7-10 days to turn pile minimum number of times

Microbe pile should sit after it cools, 6-8 weeks depending

Bring community together and make your pile!

Result:

A soil additive rich in microbial life that brings the healthy, living cycle of micro-organisms, the full soil food web, to your soil and plants—that provides your plants continuing access to the nutrients they need to thrive.