permaculture

[ChildrensPeaceGuild <childrenspeaceguild@yahoo.com>]

A friend came across some cheap cinder block and wanted to make a raised bed, 
but had read they contain fly ash.
Does anyone have recommendations/experience regarding this?

 
-Roman

Children's Permacultue Guild
>From robyn@permaculture.com.au  Sat Mar 30 20:08:10 2013
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Subject: Re: [permaculture] Cinder Block = Fly Ash?
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Fly Ash is a by-product of coal-fired power stations, also called coal ash.  
You might like to check this info out 
http://www.ehow.com/info_11386444_using-coal-ash-fertilizer.html

Coal ash is noted to contain dangerous substances, such as heavy metals. 
These heavy metals infiltrate the soil or compost mixed with coal ash. While 
the levels of toxic heavy metals in coal ash from a home stove are 
significantly lower than those from an industrial furnace, be aware that the 
metals are present in all types of coal ash. If this concerns you, skip coal 
ash as a fertilizer. As previously mentioned, coal ash offers no real 
nutritional value for your soil, only adding trace nutrients. If a true, 
nutrient-rich fertilizer is what your garden needs, you should look for a 
soil amendment other than coal ash.

Read more: Using Coal Ash Fertilizer | eHow.com 
http://www.ehow.com/info_11386444_using-coal-ash-fertilizer.html#ixzz2P4TEIckC

On 31/03/2013, at 10:52 AM, ChildrensPeaceGuild wrote:

> A friend came across some cheap cinder block and wanted to make a raised 
> bed, but had read they contain fly ash.
> Does anyone have recommendations/experience regarding this?
> 
>  
> -Roman
> 
> Children's Permacultue Guild
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