Castings & Coir/Castings

On this site there is has been much discussion about worm castings and coir, a sustainable substitute for peat moss. In the greenhouse at they are mixed for material for growing spouts or in the pots for plants. But for outdoor growing, Growing Power does not suggest using a mix.
They use castings to make tea or for sprinkling over plants as fertilizer, but not coir. For various reasons, like not having a major supply of castings as GP does, and reading that ‘peat moss’ added to castings is a good thing for growing outside, I have decided to mix the two for topping and fertilizer for outdoor plants. Worm castings are full of nutrients for plants while coir holds water for the plants. I do not yet have the scientific evidence of how this works, the mixture of coir and castings, for outdoor plants, but know from experience it works. Recognizing the value of this method is the first step in my renewed effort to focus more on the G.R.A.F. home model garden. I do not have a name for this mix yet but will report more on it as I learn about it and how it works.

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