[permaculture] Material for raised bed

Heide Hermary heidehermary at pacificcoast.net
Thu Jul 25 15:03:46 EDT 2002

The copper compounds used in wood treatment are also highly toxic and about to be
withdrawn from the market.
I have been told that charring the wood plank on the soil side increases its life
span in the soil. I heard this in connection with the use of western red cedar,
which resists decay as long as it is not in direct soil contact. Does anybody
have experience with this?

Mark wrote:

> At 11:10 AM 7/25/02 -0500, you wrote:
> >Hi,
> >
> >What's the right material to build raised beds?  Are AC2 treated woods safe
> >for vegetable gardens?  How about those plastic deck boards?  Thanks for the
> >answers!
> >
> >Michael
> A few Ideas...
> Black locust is great, don't inhale the dust from it though, clots your
> blood.  O sage orange and oak are also rot resistant.  There are references
> on wood characteristics out there so you can check for locally available
> stuff.  As for treated lumber, if you can find it WO arsenic you should be
> OK.  Plastic is Ok with me, help pump up the recycling market.  You might
> also consider used concrete, plenty available in more less stack able
> slabs.  You might even get paid to haul it away.  You could chink it
> together with soil and plant herbs, violets, strawberries etc in the cracks
> to keep it looking good.
> Mark P. Ludwig
> Poultry Research Lab
> University of Wisconsin -Madison
> 608-262-1730 WK
> 608-846-7125 HM
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