The rumor persists: If you water your hydrangeas with vinegar, you will experience a blue flower miracle. Read this guide before you fall into the vinegar trap. You can find out how to dye your hydrangeas blue gently and easily here.
Can you water hydrangeas with vinegar?
Watering hydrangeas with vinegar is a myth and harmful to the plant. Instead of using vinegar, check the pH of the soil, incorporate acidic rhododendron soil and, if necessary, use alum or hydrangea blue to color the flowers blue.
What happens if you water hydrangeas with vinegar?
Many magnificent hydrangeas have already fallen victim to the rumor. According to legend, if you water hydrangeas with vinegar, the flowers will turn blue. In fact, vinegar in irrigation water is a mercilessplant killer What is a home remedy that easily dissolves stubborn limescale causes disaster on sensitive plant cells. If vinegar gets into the soil through the irrigation water, hydrangeas die and all soil organisms are destroyed. However, you don't have to give up your desire for blue hydrangea flowers. Please read on.
How to turn hydrangea flowers blue?
The blue color of flowers occurs when a hydrangea absorbs aluminum in acidic soil. From apH value of less than 5.0, hydrangea roots absorb aluminum sulfate dissolved in water and the flowers turn blue. Aluminum sulfate is available under the product name alum. How to dye hydrangea flowers blue:
- Check soil value with a test strip.
- If the pH value is greater than 5.0, incorporate acidic rhododendron soil.
- Dissolve 3 grams of alum (€13.00 on Amazon) in 1 liter of rainwater.
- From the beginning of May to the beginning of June, water the hydrangeas once a week with the blue dye.
- Alternatively, use commercially available hydrangea blue, according to the manufacturer's instructions.
Which hydrangeas can be dyed blue?
Not all hydrangeas can master the magical color change to rich blue. The use of alum or hydrangea blue leaves no trace on white and red varieties. You will achieve the best results withpale pink farmer's and plate hydrangeas (Hydrangea macrophylla). The premium varieties of the Endless Summer series with pastel-colored flowers have particularly stood out.
Tip
Epsom s alt ensures lush green hydrangea leaves
With yellowish, faded leaves, hydrangeas lose their colorful radiance. The cause of the sickly pale leaf discoloration is acute magnesium deficiency. The natural mineral is an important building block in chlorophyll, known as leaf green in gardening terms. By giving Epsom s alt you can compensate for the deficiency. Administer the Epsom s alt magnesium sulfate either as a granular fertilizer or liquid fertilizer. Within a short time, your hydrangea will have lush green leaves.
