• Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies living kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education experiences global resources the cider press projects digital market permies.com all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • raven ranson
stewards:
  • paul wheaton
  • Jocelyn Campbell
  • Julia Winter
garden masters:
  • Anne Miller
  • Pearl Sutton
  • thomas rubino
  • Bill Crim
  • Kim Goodwin
  • Joylynn Hardesty
gardeners:
  • Amit Enventres
  • Mike Jay
  • Dan Boone

What is the pH of Compost?  RSS feed

 
Posts: 155
2
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Just curious.....for this purpose lets say that the compost was made of plant material like grass clippings, leaves, and woodchips
 
pollinator
Posts: 2392
82
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Strictly speaking, compost doesn't have a pH. It's the water that leaches off of the compost, or the compost tea that has hydrogen ions that you can measure and put on the pH scale.

That said, the more rotted it is, the more humic acids that have formed, the more acidic it will be. If the pile went through a lactic acid fermentation, or if you made your compost with something like spoiled silage, you could have an acidic pH down in the 4 range.

It's hard to think of how you could get an alkaline compost, something that after you soak it in water, it measures higher than 8. If you put a whole lot of wood ash on the compost pile, that might bump the pH up.
 
When all four tires fall off your canoe, how many tiny ads does it take to build a doghouse?
It's like binging on 7 seasons of your favorite netflix permaculture show
http://permaculture-design-course.com/
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!