recycling excess soil

Rodger Whitlock
Sun, 07 Oct 2012 10:31:12 PDT
On 7 Oct 2012, at 9:18, Michelle Domocol wrote:

>  I have alot of excess soil/media from past propagation projects.  Does anybody
> know about cost-effective methods to sterilize and recycle excess soil?

The late Ernie Lythgoe, a former doyen of our local rock garden club, used to 
mix up his potting soils from the reddish mineral layer of soil under the usual 
organic forest duff. He "sterilized" it by putting it in black plastic bags and 
leaving these out in the sun. How long? I honestly don't remember, but at a 
guess, a week or two in mid-summer.

What I do: I dump it on various beds. The various ingredients can only improve 
the native soil, which is rather heavy and poorly drained.
Rodger Whitlock
Victoria, British Columbia, Canada
Z. 7-8, cool Mediterranean climate

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