Botany or Plant Biology
Gardening

What is the effect of black coffee on plant growth?

Answer

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09/14/2011

ANSWER:

Black coffee and even the coffee grounds can be added to the soil to increase the Ph of the soil. Certain plants will grow sluggishly in low pH. One of these is the Azalea. They like high pH soil and oak leaves and/or coffee/coffee grounds added to the soil or just placed on top of the ground will do this.