Leftover coffee granules are super useful around the garden. You don't have to throw them away!
Here are ten of our top tips for using coffee granules in the garden.
- Worms are attracted to coffee granules and will aerate your soil. Incorporating them into the ground will encourage worms to do the hard work of cultivating your soil.
- Using fresh or unwashed coffee granules around plants such as Hydrangeas will turn their flowers blue. This is due to the acidity of the granules.
- You can use spent coffee granules to grow your own mushrooms (See our Discover article part 3)
- Incorporating them into the soil before planting radishes and carrots not only will improve their flavour but will deter carrot root fly and flea beetle.
- Keep cut flowers fresher for longer by putting them into a wetted coffee compost mix. It keeps them fresh and acts as a room air freshener at the same time.
- Incorporating them into the compost heap helps reactivate and helps with the decomposing of the materials.
- Reduce fungal attack from soil pathogens such as Pythium and Fusarium. This can be achieved by incorporating the grounds into the soil.
- Cucumber, Spinach and beans can benefit from the antimicrobial activity produced by the coffee grounds. This activity can prevent rusts and mildews from the seedling stage to adulthood. Even a compost with only 6% can offer protection.
- Soaking a handful of used coffee granules in water overnight will produce a foliar feed. To 1 litre of water add a generous handful of grounds and soak. Strain the following day and put the liquid in a handheld sprayer. Only apply either on overcast days, early morning or late evening to prevent scorching.
- Lastly with several applications around plants will deter slugs but it is a slow process and needs to cover quite a wide area to prevent the slug from stepping over it.