Hydrangeas are shrubs that have large, sublime flowers. The most common are pink, white, and blue colors. They are also known for their color is easy if they know and adopt the necessary techniques. Thanks to them, you can change their color to adapt them to your interior or your garden. These flowers take on the color of the pH of the soil where they are planted. Discover with a step-by-step guide how to change the colors of these flowers, obtaining the shade you want.

Pink Hydrangeas – Source: spm

1. To get pink flowers

Pink hydrangeas are the most common. These flowers are mostly because they are watered with clear water. Result: The pH of the soil drops and loses its acidity. This happens due to limescale in the water. Raise the pH by adding calcium nitrate or sawdust and you’ll get pink flowers. Be careful, this technique must be used once. Flowering plants need the acidity of the soil to grow healthy. Prolonged treatments to vary the colors of the flowers that increase or decrease the acidity level can damage the plant over time.

White Hydrangeas – Source: spm

2. To get white flowers

When you have hydrangeas of different colors like pink or blue, you can swap them out for white. To achieve this, you’ll need to raise the pH of the soil to 8. To achieve this pH, you need to provide the soil with nitrogen and phosphorus-rich fertilizers, such as eggs or meat substitutes. When you notice that the plant is in bad shape, immediately water the soil again with rainwater or running water to gently lower the PH.

Blue Hydrangeas – Source: spm

3. To get blue flowers

In order for the flowers to retain their original blue color or for the hue to become brighter, it will be necessary to lower the pH of the soil to less than 5. This level is low and is perfect for hydrangeas. To obtain this tone by lowering the PH, you will make a homemade aluminum sulfate by mixing 2 grams of aluminum sulfate in a liter of water and this mixture will be watered at least every three days. You can get these ingredients at a specialized gardening store.

Red Hydrangea – Source: spm

4. To get red flowers

Each floor has its own pH. When you measure it, you can act to change the colors. To obtain red hydrangeas you will have to raise the pH of the soil to 6 or 6.5 and for this we will add aluminum sulfate, which you can easily find in a specialized gardening store. With this pH, you will get bright red or garnet hydrangeas. Don’t forget that you’ll need acidic soil to grow healthily. Therefore, it is recommended to use this system for a short time so that it recovers its natural color and recovers its strength and health.