Have you ever heard of the trick of getting the blue hydrangea flowers with rusty nails?
We'll reveal whether it really works.
Would you like flowers in the garden that inspire with blue blossoms?
In such a case, many hobby gardeners turn to magnificent hydrangeas.
If you are not very familiar with plants, you might be surprised why the flowers
suddenly have completely different colors
in the following years
.
Yes, it's a fact: with hydrangeas we run the risk of the flowers fading after a while.
Instead of deep blue colors, they decorate our garden with washed-out pink tones.
In such a case, can the plant no longer be saved?
Not quite.
In fact, there is something you can do to preserve the bold colors
.
Hydrangeas: That's why the trick with the rusty nails doesn't work
A myth that has persisted to date: With the help of rusty nails that you stick in the ground, you can help hydrangeas to bloom blue.
But does this trick really work?
Theoretically yes, in practice mostly not, reports the Lower Saxony Chamber of Agriculture.
The iron that the plants absorb is supposed to come off the nails.
That iron and aluminum ensure the strong blue tones of the plant.
It sounds like the nail trick should work.
However, the Chamber of Agriculture points out
that the pH of the earth also plays an important role
.
If this is
above 6.0
, the metal connections remain in the ground.
The hydrangeas cannot fall back on iron and aluminum.
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Hydrangeas with blue flowers: how to get rid of the pink color
Still, there are ways to keep it blue.
Try out the following tricks:
Buying the right hydrangea
varieties: First of all, you need to be careful to get the right varieties when buying.
Despite your best efforts, some flowers stay pink.
Inquire beforehand which plants can have blue flowers.
Work leaves, coniferous litter or rhododendron soil into the soil
: This will lower the pH value.
But be careful: If the earth is too loamy, this will not work either.
Use potash alum and hydrangea fertilizer
: If you add potash alum to the irrigation water between May and June (approx. 3 grams per liter), you are able to increase the chances of blue flowers.
Special fertilizers for hydrangeas can also be used.
(soa)
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