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Feeding coffee grounds to red wigglers

Updated on April 7, 2015

Coffee is a staple for many people around the world. But you’ll also have to take note that materials that were used into making it like coffee grounds, filters and bags, are usually thrown to the trash almost immediately (can actually mount up to millions of pounds worth of garbage). More often than not, these are just thrown to the garbage soon after. But you can still turn this around by recycling these. And one way of making good use of it is by feeding coffee grounds to Red Wigglers. Your Red Wigglers will definitely enjoy this grainy treat!

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Coffee and gardening mix well

You can utilize the grounds from your coffee by simply doing the following (cost-effective) things. You can sprinkle some of these on your garden or yard (sprinkle evenly to produce better garden blooms), before watering it; or add these to a pile of compost. This will help increase and balance nitrogen content.  You can also dilute it with water, to use as a liquid fertilizer for your plants. Other than that, you can bury some of the grounds into your soil, for indoor and outdoor plants. This process actually helps release valuable nutrients (nutrients that help make the ground more acidic and richer). It can also work as an insect repellant; and can always be used as food for your red wiggler worms.

Coffee grounds used in worm composting

Now, if you’re very much into vermicomposting, then you can always supplement grounds from your coffee as a food source (amongst other organic wastes) for your worm pals. You no longer have to worry about the acid content from your these, as it has already been dispensed from the previous brewing.

How to feed coffee grounds to composting worms

It’s best to feed your composting worms grounds from coffee that have been further crushed into smaller pieces. Since your compost pals are born with no teeth, it’ll be better to feed them grounds that are easier for them to consume. You can add these into your small-sized worm bin probably once a week (put in moderate amounts like a cup worth).

You can always get or collect your supply of grounds from your coffee machine, or from a few coffee shops, like Starbucks for example. Starbucks has been known for being eco-friendly. So they’ll surely provide you with some coffee grounds, that you can use as a feed for your red wrigglers.

Red worms attraction to coffee grounds

Based on subjective facts, red worms can be very attracted to grounds taken from coffee. So it’s safe to feed them these. Aside from this, they can also be fed with all sorts of organic wastes. You can feed these worms anything except meat and dairy products. offers quality organic gardening products. Buy live and healthy worms for composting like Red Wiggler worms and European Nightcrawlers. You can also buy organic fertilizers, herbicides, pesticides and other green gardening supplies and equipments here. Visit their site and browse their catalog to know more about their products.


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