Will Coffee Grounds Turn Your Hydrangeas Blue? Here's What a Soil Scientist Says

Will Coffee Grounds Turn Your Hydrangeas Blue? Here's What a Soil Scientist Says

Changing hydrangea flower color with coffee grounds is a popular garden hack that could do more harm than good.Kritsada PanichgulIt’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…