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Old September 13, 2015   #21
maf
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Join Date: Jun 2010
Location: England
Posts: 515
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I looked through the "debunking" of comfrey in the facebook posts and it all seems to entirely miss the point of growing this plant which is that its very deep roots will draw minerals from deep within the soil where they would be unavailable to most other plants. This obviously allows the recycling of nutrients that would otherwise be lost for good.

Add to this that it is a very good source of trace minerals, is easy to break down in the compost heap or as a liquid or if applied directly to the soil as a mulch, and you have a very useful resource that is essentially free apart from the space needed to grow it.



(I should add that I don't currently use comfrey, as I don't garden on a large enough scale to make it worthwhile to devote some of my growing space to it.)
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