Are Coffee Grounds Good For Houseplants. Working coffee grounds into the soil will improve its tilth but do this sparingly unless you have acid-loving plants like camellias and azaleas. You can use coffee grounds for your houseplants -- and gardening experts say you can compost them or add the grounds directly to the soil.
How to Use Coffee for Houseplants Coffee grounds are a good source of nitrogen encourage the growth of the beneficial microorganisms in the soil and help plants that prefer acidic growing medium. If the grounds you use are moist they can boost fungus growth and this can be the death of your houseplants. Coffee grounds for Pothos.
Used coffee grounds are a free organic material and so if you want to amend your soil to help improve soil quality then adding in a few cups of grounds every now and again can be a good way to do this.
Fresh coffee grounds are acidic. As mulch large quantities of coffee can help some sandy soils but are can make silty soils hydrophobic. Because decomposition needs to happen to release nutrients that plants can use it is better to compost these items first rather than add them directly to your indoor garden. Furthermore their abrasiveness makes them a great cleaning scrub around the house.