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Rock dust
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Mike Lyle wrote: Broadback wrote: I'm sure that many of you have seen the recent publicity about mixing rock dust with compost to make a great soil growing media. I live in North Staffordshire, is this dust available near here and what is the cost? My lower garden is devoid of top soil, I would love to create something to enable me to grow anything, apart from gorse. all help welcome. I'm awfully sceptical about this whole thing. Rock dust is more or less what subsoil _is_. It seems there are cases where it's done some soils a lot of good, but it must depend on what the rock is, and what the soil in question is lacking. I'd devote the time and money to finding lots of organic material. (The gorse, of course, is doing your soil a lot of good on its own.) No, it's for real. Rock dust is before many of the minerals have been leached by millennia of rainfall - subsoil is the state afterwards. Gorse is generally a good indicator of a very poor soil, often one that has been badly leached. A reasonable compromise would be some quarry dust and some nutrient- rich organic matter - nightsoil would be ideal, but all of bullshit, cowslop and pigshit are fine, horse and poultry dung not bad, but the cardboard residue that is being sold as a peat substitute (and peat itself) are damn-near nutrient-free. Failing quarry dust, a 50/50 mixture of aggregate and builders' sand would do. Regards, Nick Maclaren. |
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