Potting Soil

Subject: Potting Soil

> John Lobingier wrote:
> >I thought top soil is better than potting soil because potting 
> >"something" in or not in it that discourages weeds from popping
> >pot???  I am just asking if this is true or not.  

Torsten Tiedtke wrote:
> My understanding of this matter (as explained to me by my Dutch 
> nothing is 'added' to potting soil to prevent weeds.  The soil i
> by heat.  This can occur naturally during the composting of the 
> be done by some sort of oven (I have no idea how this is accompl
> a commercial scale)...

That's right.  The heat (either from composting, or another 
source) kills any viable "weed" seed in what ever soil is 
processed as potting soil.  If the soil actually contained a 
substance that _inhibitted_ weeds, you couldn't grow any 
ornamentals in it either... after all, a "weed" is just a plant 
growing somewhere that you don't want it!<g>

Karen Randall
Aquatic Gardeners Assoc.
Boston, MA