Is Black Coffee Good For Houseplants. If you decide to try watering houseplants with coffee keep a close eye on your plant. Caffeine gave plants think tea plants cocoa and coffee trees an edge over competing plants growing nearby.
If the foliage starts yellowing or the tips of the leaves start turning brown its a sign that the coffee is adding too much acidity to the soil. Houseplants benefit from a dose of coffee grounds or a shot of the black stuff because coffee is rich in both nitrogen and acid. The coffee you water your plant with needs to be black.
The same brewing process using organic materials also can help your plants according to The Herb Companion magazine.
Is Coffee good for plants. The coffee you water your plant with needs to be black. Used coffee grounds make an effective and fast-acting fertilizer for plants and vegetables. Green 7 to 10.