Grow bigger flowers with one kitchen scrap

Flowers are abundant in hydrangea flower beds in gardens
-Credit: (Image: Getty Images)

Hydrangeas are a favourite in summer gardens, thanks to their large, stunning blooms. However, it can be disheartening if they don't flower as abundantly as expected.

One of the main reasons hydrangeas may struggle to flourish is due to a lack of nutrients. But instead of splashing out on expensive store-bought feed, you can give your flowers a boost with something you'd otherwise throw away: coffee grounds.

According to a gardening enthusiast and founder of Hydrangea Love, the acidic nature and nutrients found in coffee grounds can help enhance hydrangea blooms and maintain their health, reports the Express.

She explained: "Using coffee grounds for hydrangea plants offers several benefits that can enhance their growth and vibrancy. Coffee grounds are rich in essential nutrients such as nitrogen, which is crucial for healthy foliage. Additionally, they help improve soil structure and drainage, promoting root health. The slightly acidic nature of coffee grounds can also influence the soil pH, which is particularly beneficial for hydrangeas as it can help in achieving their characteristic blue blooms."

Why do coffee grounds help hydrangeas?

The nitrogen present in coffee can aid in improving photosynthesis in hydrangeas, which will help the flower grow faster and result in larger blooms.

Coffee grounds also act as a natural pest deterrent. They are a popular method to keep slugs out of gardens, as these pests cannot tolerate the strong smell of coffee.

How to boost hydrangea flowers with coffee grounds

All you need to do is collect the leftover coffee from every time you make a cup of coffee, but you can also ask local coffee shops if they are willing to give you any of their used-up coffee grounds as well.

Store the coffee grounds in a container and once you are ready to use them on your hydrangea you will need to make sure they are completely dried out.

Spread the coffee grounds on a baking tray and let them air dry for a day or two before using them in your garden. This prevents mould growth and makes them easier to handle.

Once the coffee grounds have dried out spread them evenly in a thin layer around the soil of a hydrangea plant.

Make sure not to apply too much coffee as hydrangeas only need around one cup per plant to help them grow, and they only need to be fed once a month throughout the summer to see the benefits.

You can also mix coffee grounds into a compost pile or turn them into a liquid fertiliser to help hydrangea flowers. You could try soaking about a cup of used coffee grounds in five gallons of water for a week, stirring occasionally. Use this nutrient-rich solution to water your hydrangeas.

The gardener advised: "After incorporating coffee grounds, keep an eye on your hydrangeas for any signs of distress, such as yellowing leaves or stunted growth. These symptoms could indicate an imbalance in soil nutrients. If necessary, adjust the amount or frequency of coffee ground application."