Hi Karla,
It’s a good question, and not something that we’ve tried ourselves before so I’m afraid. A couple of potential issues that I could see would be:
– The coffee may become very wet and saturated upon soaking, which may not be soa easy to drain off and could cause problems in the grow bags later
– If the coffee is a few days old and has already developed contaminant mould growth, this may not be effectively killed off by the lime soak
You never know until you try these things though, so if you do give it a go then please do let us know how you get on.
best wishes,
Adam
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