You could walk away with 100 pounds of grounds for your compost.

Spent grounds also feature a few other key nutrients and vitamins, such as potassium and calcium.

In some cases, coffee grounds might evendeter slugsfrom visiting your plants when used as a soil top layer.

starbucks grounds for your garden bags in basket

Credit:Gado / Getty Images

According to experts, coffee grounds offer the most benefits when they’re used for compost.