How To: Change Hydrangea Color

Hello, my friend, hello again; today we come together to talk about How To: Change Hydrangea Color and hope the blog can help you.

It might seem like magic, but it’s science!

Hydrangeas are one of the only types of flowers that can change color. The change in hue happens in response to the availability of aluminum. These gorgeous landscaping plants are like pH alarms for the garden. Planting them near pH-sensitive plants allows gardeners to keep tabs on soil pH levels. Blue or bluish-purple blooms typically signify acidic soil (pH under 6.0), while pink or reddish flowers signify pH that’s alkaline (above 7.0). A pH between 6 and 7 will net purple or pinkish-blue blooms.

Hydrangea flowers purchased at a nursery might well change color once they are placed directly in the garden. You can control the color palette by fiddling with soil pH. It’s a fun science experiment and a great way to teach kids about soil chemistry.