4 places in a garden you should never use leftover coffee grounds – gardening experts warn that they'll do more harm than good

Leftover coffee grounds in soil.

You've probably heard many gardening experts recommend using leftover coffee grounds in the garden, as a way to boost nitrogen in the soil and encourage plant growth.

And while it's true that there are beneficial ways to use coffee grounds in the garden, there are also places where they'll cause more harm than good. Around seedlings, certain plants, and thicker layers of soil are some of the key places to steer clear of, according to plant experts.