solid7 said:
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I might just add to that, that bigger is better. Â For hot compost piles, a minimum size of 1 cubic meter is recommended. Â Not that it won't work if it's smaller - it just hots up faster that way. Â So heap it back up, and keep it as big as you can.
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    Yup. You have to reach critical mass. There needs to be a certain amount of bulk microbological activity to create heat, and there also needs to be enough material in one tall heap to insulate all that heat so it can start to accumulate and begin that positive feedback loop that the thermophiles are associated with.
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    Compost resulting from a hot pile is better in so many ways: It is done and ready to use way faster. Less plant pathogens. Fewer nutrients in water soluble form. More nutrients absconded into microbial mass that will be used to feed roots later on. And more microbial mass means a greater amount of bacterial mucuses and gells and crap - stuff that holds soil particles together and create soil structure.
    I know there are more benefits, but I need to get back to packing and cleaning the basement.
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Canes1 said:
I use just grass and leaves in this pile but I use scraps, coffee grounds and newspaper along with grass and leaves in my tumbler.
I just let it go, I was told by an "old timer" if you see it "steam" in the morning you are doing it right. Lol. I was told 2/1 ratio grass to leaves but not sure if it is right.
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     Sounds like a good mix. Probably better than mine. And at that ratio (it sounds like you know what you're doing) It should heat up pretty soon.
    One way I've found to quickly check the core temp is to shove a potato fork or shovel deep in it and let it sit for maybe 30 seconds. If the tines are approaching too hot to hold when you pull it out (~150-165F), you're rocking.
    What time did you put it together last fall? I got caught with my pants down one fall and didn't get my heap put together until after the weather cooled down. It just sat there at ambient temp (30s) for weeks until I was able to spread it all out on a sunny day in the mid 60s. That jump started it and it was over 100F in two days.
    It might also be that it got up to temp last fall and just exhausted itself. Does the compost have a nice homogenous forest duff kind of smell, or can you still smell the individual components?
    My guess is that your piles might not have been big enough last fall and your compost isn't done yet. Hopefully we'll find out in coming days. Are you making efforts to shed rain off it if you're getting lots like just about everybody is this spring?