Are Coffee Grounds Good For Indoor Potted Plants. Some plants may not be happy with acidic soil. Pros and Cons of Using Coffee Grounds for Plants Pros Improves Soil Drainage.
If added in fairly large amounts they can raise the acidity level of the soil for acid-lovers such as blueberries azaleas and rhododendrons. Microorganisms and earthworms love the. Growing Earthworms on Coffee.
This study conducted by the International Plant Propagators Society noted that using coffee grounds did result in lower germination rates.
When used as a plant fertilizer coffee grounds can replenish the soil acidity that is often lost in potted and in-ground plants. 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 added in fairly large amounts they can raise the acidity level of the soil for acid-lovers such as blueberries azaleas and rhododendrons. Coffee grounds can be used to fertilize indoor plants but you are best to make compost with them first.