Don’t throw away your coffee grounds once you’re done with your morning brew. Used coffee grounds are a great slug and snail repellent and they make a good slow-release fertiliser, too. "Coffee grounds contain nutrients that plants use for growth," Gardeners' World suggests. "The grounds are relatively high in nitrogen and also contain potassium and phosphorus, as well as being a source of moist organic matter."

However, it's best to apply coffee in moderation. "The chief potential problem is that if applied in quantity to the soil surface, the fine particles clog together to form a barrier that prevents water and air from reaching plant roots." Gardeners' World advises that the "safest way to use coffee grounds in the garden is to add them to compost containers or worm bins".

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