Change Color Of Hydrangea With Coffee Grounds Can coffee grounds really change hydrangea color? Yes - but with a few important caveats. As a gardener who's tried just about every trick in the book, I can tell you coffee grounds are a helpful, gentle tool for nudging blue tones in the right hydrangeas. They won't work on every plant or in every soil, but used correctly, they can.
Hydrangeas color is based on how acidic your soil is-the more acidic the soil you plant your hydrangeas in, the more blue. We've found that adding a few coffee grounds to your soil can do just the trick. Here's everything you need to know about how to produce the bluest hydrangea blooms while putting those spent coffee grounds to good use.
Did you know that you can change the color of hydrangeas with coffee grounds? It won't happen overnight, but you can slowly change their color by digging a hole and sprinkling some leftover grounds into the soil. Coffee grounds will make the soil more acidic, producing a lavender. To use coffee grounds to change the color of your hydrangea flowers, start by adding a small amount of coffee grounds to the soil and monitoring the response of the plants.
You can then adjust the amount and frequency of application based on the desired color change and the soil conditions. Using coffee ground on hydrangeas One way is using coffee grounds on hydrangeas. Hydrangeas are well known for their globular blooms and with rich soil you can even alter the colours you get.
Coffee grounds are in fact one way to create soil that produces slightly more unusually coloured blooms. Hydrangeas bloom pink in alkaline soil and blue in acidic soil, so adding coffee grounds to your plants could help to encourage blue flowers. It's a popular piece of garden folklore: Coffee grounds will change the color of hydrangea blooms, making them the dramatic blue many gardeners covet.
The truth is more complicated, according to a soil scientist. Find out if it's worth putting used coffee grounds around your hydrangea plants or not, plus better ways of changing their flower color. If you take your leftover coffee grounds from your morning brew and sprinkle them around the base of your pink bigleaf hydrangeas, then after a few weeks your hydrangea flowers will change colors and turn bright blue.
Sounds pretty good, right? But does it actually work? Blue bigleaf hydrangeas commonly produced non-blue blooms, based on the soil's acidity. Adding coffee grounds helps nourish the soil, and may impact the color.
