How to make hydrangeas change color and why they change color

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1. How to make hydrangeas change color

2. Reasons why hydrangeas change color

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If you want the hydrangeas to change color, you can take 2-3g of aluminum sulfate and mix it with 1L of water when the hydrangea buds just emerge. Water the flowers every 10 days, usually 3-4 times, and the hydrangea will be It can bloom blue flowers. In addition to aluminum sulfate, you can also use hydrangea bluing agent to adjust the blue color. Sprinkle the bluing agent on the soil surface, and then with watering, the active ingredients will dissolve into the soil with the water, changing the color of the hydrangeas.

1. How to make hydrangeas change color

1. How to make hydrangeas change color

1. Aluminum sulfate: If we want hydrangeas to change color, we usually make pink hydrangeas bloom blue. We need to change the pH value of the soil. Small, can be tinted with aluminum sulfate. When the hydrangea buds have just emerged, take 2-3g of aluminum sulfate, mix it with 1L of water, and water the flowers every 10 days. Usually after 3-4 applications, the hydrangea will bloom with blue flowers.

2. Blue-tendering agent: Use aluminum sulfate to adjust blue. It is easy to misunderstand the timing and dosage of hydrangeas. It is recommended for novices to sprinkle a layer of hydrangea bluening agent on the surface of the pot soil in spring when hydrangeas begin to sprout new buds. After that, with watering, the active ingredients will dissolve into the soil with the water, changing the soil PH value, thus changing the flower color of the hydrangea. Spread the bluening agent every 2 months.

2. Reasons for the discoloration of hydrangeas

< p>1. The reason why hydrangeas change color is due to changes in soil pH. When the soil pH value is 4-6, hydrangea flowers bloom blue. When the soil pH value is greater than 7.5, hydrangea flowers bloom red. When the soil pH value is greater than 7.5, hydrangea flowers bloom red. During the process of changing the pH value, hydrangeas will also change into different colors, such as purple and pink.

2. The reason why hydrangeas change color, in addition to being affected by the pH of the soil, will also change with the blooming time of hydrangeas. For example, pink or blue hydrangeas will slowly turn green until The hydrangea has completely withered and declined.

2. Reasons why hydrangeas change color

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