Being in the coffee industry for so many years, and having an avid gardener for a mother, I’ve heard all the wonder stories of how to put used coffee grounds to gardening use and grow a green thumb. So I decided to compile a little list of things I’ve heard and read on the matter …
Coffee grounds are acidic and can be too acidic even for acidity-loving plants … however, once coffee grounds are added to soil they start to decompose and the acidity will naturally neutralize. Don’t add more coffee grounds until the original have already decomposed. Coffee grounds should be used within about 3 weeks for maximum nutrient value.
It’s said that if you mix carrot and radish seeds with dry coffee grounds when planting them that you’ll get a higher yield.
Coffee grounds act as a repellent. By sprinkling coffee grounds through and around your garden, you can repel ants, cutworms, slugs, and snails. Apparently regular worms love coffee grounds and will be happily at home with the addition. It’s also said that coffee grounds and orange peels will keep the kitties away from using your garden as their bathroom.
Do you like mushrooms? Word has it that mushrooms thrive in soil mixed with coffee grounds … or even straight coffee grounds, sans soil.
Make coffee grounds “tea.” Add two cups of used coffee grounds to a five-gallon bucket of water. Steep overnight. Use as a liquid fertilizer for garden and container plants.
What other ways can used coffee grounds be used in the garden?