Plants like tomatoes, clovers, and alfalfa won’t benefit from caffeine. Instead of using coffee grounds to deter slugs, use the sharp edges of crushed egg shells to cut the soft bodies of slugs and kill them.
Unless someone can provide better evidence, I must conclude that coffee grounds are not a good way to get rid of the type of ants I have in my garden. Other Ways to Get Rid of Ants Mint is reported to work to deter ants – find out if it works here:How to Get Rid of Ants With...
If you have places that have stagnant water pour coffee grounds or fresh coffee (of the cheap kind that you would never drink) into the water to deter mosquitoes 2 Reply Steveisler 4 years ago Occasionally I put my coffee grounds in a blender with my energy drink mix, I know it so...
Gardens Alive had coffee grounds tested by Will Brinton, founder and Director of theWood’s EndResearch Laboratoryin Maine.He found the grounds were too acidic, even for acidic loving plants. He also cautioned the grounds should not be added to the soil in raw form. However, he did like ...
Prevent bugs and pests:Coffee grounds can deter wasps, fleas, andmosquitoes, as well asslugsand snails. The coffee grounds can be used as is; it is not required (and might even be hazardous) to burn them before scattering them around your garden. ...