Hydrangeas are shrubs that have large and sublime flowers. The most common colors are pink, white and blue. They are also known because their color is easy if you 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.
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 lime in the water. Raise the pH by adding calcium nitrate or sawdust and you will get pink flowers. Be careful, this technique must be used once. Flowering plants need soil acidity to grow healthy. Prolonged treatments to vary flower colors that increase or decrease the acidity level can damage the plant over time.
2. To get white flowers
When you have hydrangeas of different colors like pink or blue, you can change them to white . To achieve this, you will need to raise the pH of the soil to 8. To achieve this pH, you must provide the soil with fertilizers rich in nitrogen and phosphorus, such as eggs or meat substitutes. When you notice that the plant is in poor condition, immediately water the soil again with rainwater or tap water to gently lower the PH.
3. To get blue flowers
In order for the flowers to retain their original blue color or for the shade 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 you will water this mixture at least every three days. You can get these ingredients at a specialized gardening store.
4. To get red flowers
Each soil has its own pH. By measuring it, you can act to change the colors. To obtain red hydrangeas we will have to raise the pH of the soil to 6 or 6.5 and to do this we will add aluminum sulfate, which you can easily find in a specialized gardening store. At this pH, you will get bright red or maroon hydrangeas. Do not forget that it will 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 regains its strength and health.