How to Change the Color of Your Beautiful Hydrangeas: Just Tap Water

Almost no one knows that tap water is enough to change the color of hydrangeas: this is the experts’ method.

The world of hydrangeas is fascinating, with their thousands of colors that can change depending on the type. They can even change color based on what you use to feed or water them. For experts, this is a flower that represents a true magic of nature with its particular blooming. But how do you make them change color? All you need is tap water.

What Determines Flower Color?

The color of hydrangeas is not only linked to the type of plant, but also to the pH of the soil. The soil can have a higher or lower level of acidity or alkalinity. Nature is an extraordinary world, especially in this case where elements bring out its colors.

• When the soil is acidic, the flowers take on shades of blue and light blue.
• If the soil is less acidic (more alkaline), you’ll get pink and purple flowers.

This means that to change the color of the flowers, you simply need to modify the pH of the soil. You can repot the plant or use natural elements that promote the change — always with full respect for this wonderful plant. These are small gardening tricks that always bring joy, because they help the plant grow healthily while letting you discover something you’ve never seen before.

Tap Water to Change Hydrangea Color

To change the color of hydrangea flowers, there are a few simple tricks. Before talking about tap water, experts mention other natural elements:

• Wood ash is an element that should never be thrown away as waste. It’s a natural fertilizer for all garden plants. In this specific case, simply spread it on the soil every 3 weeks starting in March. What happens? The flowers will turn a beautiful pink and all its shades.
• Coffee grounds — this ingredient, often considered waste, is a natural fertilizer in gardening. It enriches the soil with nitrogen and essential nutrients. It also makes the soil much more acidic, turning the flowers blue.
• Eggshells — another natural fertilizer that should never be thrown away. This ingredient also changes flower color by acidifying the soil.

One method that all experts use is based on tap water, especially if it’s calcareous (hard water containing lime). Over time, it makes the soil much less acidic, which changes the color of the hydrangeas. Simply use it for regular watering, and you’ll achieve a perfect final result.