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Originally Posted by Kylie2x
YES Compost them.. worms love them... We compost everything... How cool you have somewhere to get grounds.. I believe if they go straight to the garden they can be a bit acidic..
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Bingo! A colleague of mine raises red wrigglers and sells them and their castings by the bagful at farmer's markets and plant shows. She feds them a combination of coffee grounds (from the coffee shop) and fresh yard trimmings.
Kylie also gives a good warning about composting the coffee grounds before you use them. Some acid-loving plants like Azaleas, Camellias, etc. won't mind a moderate amount as a top-dressing on mulch. Other plants will experience burn on their feeder roots. Composting coffee grounds with fresh yard trimmings and a moderate amount of real wood ash produces an excellent soil tonic and fertilizer.