Why do hydrangeas change color?
Do you know this? Here is an explanation about why hydrangeas change color in the field of green plants and flowers, with specific introduction as follows:
Why do hydrangeas change color?
Hydrangeas change color because they contain a type of anthocyanin called anthocyanidin, which combines with aluminum ions to produce blue pigments. Therefore, hydrangeas appear blue in acidic soil with free aluminum ions and pink in alkaline soil with bound aluminum ions, and the flower color can be changed by adjusting the soil pH.
Hydrangeas change color because they contain a type of anthocyanidin called delphinidin glucoside, which belongs to the anthocyanin family and combines with aluminum ions to form blue pigments. In alkaline soil, aluminum ions are in a bound state, so the hydrangeas appear pink, while in acidic soil with free aluminum ions, they are blue.
When cultivating hydrangeas, you can change the flower color by adjusting the soil pH, making the flowers appear pink, red, light blue, or purple. To make hydrangeas turn blue, you need to apply ferrous sulfate to the soil, and to make them turn pink, you need to apply lime.
Hydrangeas thrive in loose, fertile soil rich in organic matter. When planting hydrangeas, you need to use a mixture of peat soil, coconut bran soil, and sandy soil to create a cultivation substrate. Moreover, you should replace the potting soil for hydrangeas every 1-2 years to keep the soil loose and breathable, maintaining healthy plant growth.
When cultivating hydrangeas, you need to apply phosphorus and potassium fertilizer once a month during the plant's growing season to promote bud differentiation and keep the soil moist, watering once a week. When watering and fertilizing hydrangeas, be careful not to splash fertilizer and water on the flower center of the plant.
The above information about why hydrangeas change color is shared for everyone to learn and understand!