Some Acid loving plants such as Azaleas, Camellias Gardenias, Hydrangeas, Hibiscus, Roses, Pieris, Hydrangeas Rhododendrons, and Blueberries seem to respond well to coffee grounds. We look at the uses of coffee grounds in the garden.
No real scientific data seems to be availble on the use of coffee grounds in the garden.
Coffee grounds as fertilizer
Coffee grounds can be applied straight to the soil or mixed with water and used as a liquid. (Coffee grounds tend to settle fairly quickly so keep shaking the mixture up. as you water.
Coffee grounds in potting mix
Coffee grounds can be mixed into potting mix to help promote growth. Many vegetable gardeners use coffee grounds due to the high nitrogen content, which promotes strong leafy growth.
Coffee grounds for compost and in worm farms
Coffee grounds also are great for adding to compost and worm farms, the worms seem to thrive on coffee grounds. Be careful not to overuse coffee grounds in either worm farms or compost bins. Experiment with the amount you add and monitor results. Use a ph testing kit to keep a check on acidity. Adding leaves and dried grass clippings will help prevent compost becoming overly acidic.
Coffee grounds as snail and slug repellant
Coffee grounds also seem to act as a snail and slug repellant, often used around hostas. Try coffee grounds with dried crushed eggshells for an organic snail and slug repellant. Also said to repel ants (and cats)
We suggest that you are careful in the use of coffee grounds, monitor the results and do not over use coffee grounds. If in doubt, consult your local nursery or a qualified horticulturalist for advice.
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