Re: [CH] Raised Beds

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• Previous message: Suz: "[CH] LadyBugs"
• In reply to: David J. Estrin: "[CH] Raised Beds"

> The copper will leech into the soil as anything will, but shouldn't be a
> problem as this is a naturally occuring substance.

"naturally occurring substance" of course has little bearing on
suitability.  The arsenic leachate we're discussing the safety of is
"naturally occurring".  Boron is a naturally occurring, and essential,
nutrient, but toxic excesses occur (naturally, in some areas) when the
amounts of boron are really very small.  Salt (NaCl) is naturally
occurring, yet small excesses of this in soils harm most terrestrial
plants.  Etc.

I have no knowledge about and I'm not saying that copper-treated, or
arsenic-treated, or creosote-treated wood is unsafe or unwise to use
in/near food gardens, I'm just pointing out that "naturally occurring" has
little relevance.
 ---   Brent

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