Gardeners looking to grow plump, flavoursome tomatoes this summer are being encouraged to add a common kitchen leftover to the soil now. Used coffee grounds, rich in nitrogen, provide essential nutrients that help tomato plants develop strong stems and robust root systems, according to gardening expert Jim Competti of Simple Garden Life.
Competti explains that coffee grounds improve soil composition, allowing tomato plants to establish themselves more quickly and retain moisture better during warmer months. The grounds also make the soil slightly acidic, creating ideal growing conditions. Additionally, the bitter aroma of coffee naturally repels slugs, protecting young plants from damage.
To apply, simply sprinkle three or four tablespoons of used coffee grounds around the base of each tomato plant and water thoroughly. This slow-release fertiliser will nourish the plants throughout spring. However, Competti warns against over-fertilising, as too much can cause the plant to prioritise stem growth over fruit production. A single feeding in spring is sufficient.
