How to adjust the color of hydrangea

How to adjust the color of hydrangea

Hydrangea flowers in pure blue

Hydrangeas contain a type of anthocyanin that turns blue when combined with aluminum ions. However, when growing flowers, most soils do not contain aluminum, so the flowers are generally pink.

We can add some aluminum ions by applying aluminum sulfate fertilizer every 10 days before the hydrangea buds form. Alternatively, you can apply some ferrous sulfate solution or first-grade white vinegar to the hydrangea to keep the soil acidic and allow it to bloom blue flowers.

Hydrangea flowers turn blue, purple and pink

Sometimes, you can also see that hydrangeas are not of a single color, but multi-colored, mixed colors, and very beautiful. It's like a hydrangea with blue and pink flowers, the colors are gradient, it's very dreamy.

To make hydrangeas bloom in this color, you actually need to delay the time of fertilizing. After the hydrangeas slowly turn pink, use acidic fertilizers. This will change the acidity and alkalinity of the soil and the color of the flowers will appear gradual.

Hydrangea flowers turn purple

Hydrangea flowers can also bloom small purple flowers. When using acidic fertilizers for hydrangeas, use it before the buds form and stop after the color appears. In this way, the color of the flowers will change with the salinity of the soil. As the acidity gradually fades, it will become neutral or weakly acidic, and the flowers will be blue-purple.

Hydrangea flowers turn pink

In fact, what pink flowers need is alkaline soil. If the soil is alkaline when they are grown, there is no need to worry about it. If the soil itself is acidic, then you need to adjust it to alkaline soil by using alkaline fertilizer, such as sprinkling some wood ash.

<<:  How to prune the hairy ash

>>:  He used only one branch to grow 100 pots of flowers.

Recommend

What kind of soil is suitable for growing watermelons?

With its high water content and sweet taste, wate...

How to grow potted roses? Cultivation methods and maintenance matters

How to grow small roses in pots 1. Watering Small...

What soil to use for planting freesia

1. Requirements for soil quality (1) First, let’s...

Which month is the best time to plant loofah?

When summer comes, many people have no appetite d...

What to do if the peony does not bloom

The important reasons why peonies do not bloom A ...

Best time to plant cypress trees

Cypress is an evergreen tree of the genus Platycl...

The main value of Lespedeza

Economic Value Used as feed: The newly tender ste...

What to do if Monstera leaves become soft and droopy

1. Replace the soil Reason: After a few years of ...

How to prune multi-headed chrysanthemum

When to prune chrysanthemums When pruning multi-h...

Do cheeky plants affect Feng Shui?

1. Does it affect Feng Shui? Plants are also livi...

What soil is best for growing cactus?

The growth characteristic of cactus is that it li...

Is eggplant a fruit or a vegetable?

Is eggplant a fruit or a vegetable? Eggplant is a...

What to do if the Anthurium flowers turn black and wither

1. Replenish water in time (1) Specific reason: A...