• I don't compost...least not consciously or aerobically. I rot down. It's the lazy-gardener-me....a lot of stuff I pass through the back end of a chook.

    Composting may cook weed seeds and is a quick way to foster the microbia but I gather it isn't a guaranteed way to do all that..especially on the fly in one's back yard.

    So I take the easy route and bury and mulch. 

    However, If I was to compost -- if I was -- which I won't -- I'd use a compost roller which they use at Northey Street.

    That is similar to trommeling I guess.


    Since I may seem to be somewhat rigid, I thought I'd check myself out and ask the web the question: 'Why compost?

    While I think it is the gardener's version of shovelling snow --after searching,  I couldn't find a single reason to start composting. I can tick most of the boxes without busting a gut. 

    I can't 'cook' weed seeds or kill nasty bugs -- but it has to be a very scientifically moderated aerobic composting system that can do that. You'd need to take its temperature regularly for instance and turn it religiously.In the end you'd get the product you engineered per the greens and browns thingy.

    ...and it's quick, albeit labour intense.

    But is it a gardening essential? 

  • I composted all the tree trimmings shredded  with grass clippings  and shredded paper and card board  did not have any manure .Compost heap got hot but after several months lots of  dry wood still visible   and for the size of heap  not a lot of compost .Pulverizing the material before  composting  would seem to be the best option with something like a ball mill but you could do it after composting but there could be a dust problem

    The smaller  the material is the better it should decompose but is  the effort worth it and if the compost heap gets too hot can spontaneous combust.

    • There's divisions of opinion on what constitutes 'compost'! Just searching now with "CSIRO + compost" to find buckets of info. As usual, drowning in info.

      Since there's such interest in Microbes and Compost, we're starting a Group to keep most of the discussion close by rather than scattered on the site.

      Watch this space for updates.

  • For my self-watering planters I use considerable amounts of graded coal ash. Grading with hand held sieves is slow work. At present I use 4mm aperture for my work. Happy to borrow if available.  

    • I see. But the 'compost' is dust-dry. Finished compost is humus: it is soft, fluffy and damp. It is the most perfect plant food and really does not need to be disturbed.

      I note the 'compost' used by whats-his-name on Gardening Australia is dry too. As indeed was Peter Cundall's. I am at a loss to know what the stuff is that they use and call 'compost'.

      Mine is full of red compost worms who enter the bins when they like and stay there turning household scraps and sugar cane into damp dark sweet-smelling humus. If I use it sooner it just isn't humus (soft and fluffy) but is more coarse but still full of enthusiastically-breeding worms.

      There must be many varying ideas on what compost is. Material that is made by microbes and is biologically active will need to remain damp or all those little unpaid, vital garden helpers will die and their benefits lost.

    • No doubt you have your reasons and I don't mean to criticise but why do you feel you need to screen your compost Travis? Rocks?

      Surely it would be better to leave it undisturbed and use it as it comes. Curious why you would go to all this trouble to muck with something that is perfect as is.

  • Hi Guys,

    Thanks for your comments/responses.  I guess I will be getting my DIY on!  Thanks for the book suggestions Elaine, I will definitely look them up :)    Whilst I'm not a 100%, must be organic type of gardener, my aim is to supplement my daily living with home grown edibles - without being a (insert large corporate retail chain garden store here) gardener.  I source a lot of my manures & carbon from local farms to make composts to amend my gardens - still very much a work in progress.  I will be making a trommel to grade the compost & some of my more course beds so they are suitable for different planting types.  I figure it will be a welcome addition to the local community garden in their compost making too :)

  • Here's some images for ROTARY TROMMEL.

    I've never heard of anyone on BLF using one Travis. Don't think you will have much luck borrowing one here.

    Also wondering about your proposed use for the machine?

    • Blimey! Overkill for a garden bed. My reservations are above … am interested to know what the next move will be.

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