Mairol hydrangea fertilizer

  • Immediately ready for shipping
    Delivery time 1 - 3 days inside Germany (further)
    • for deliveries abroad to the EU, Switzerland (CH) or Luxembourg (LU) within 3 - 5 days
    • for all other foreign deliveries within 7 - 14 days

Sliding-scale prices: from 8,22 EUR to 10,65 EUR
  • 500 ml
  • 3
  • 8,71 EUR
  • 12
  • 8,44 EUR
  • 24
  • 8,22 EUR
  • 1000 ml
  • 3
  • 10,65 EUR
  • 6
  • 10,48 EUR
  • 12
  • 10,31 EUR
  • 18
  • 10,14 EUR
  • 24
  • 10,05 EUR


    • 500 ml
    • 8,99 EUR*
      (Groundprice: 17,98 EUR pro Liter)
    • Product No.: 49075 / EAN: 4009398900752
    • 1000 ml
    • 10,99 EUR*
      (Groundprice: 10,99 EUR pro Liter)
    • Product No.: 49175 / EAN: 4009398901759
*incl. 19% Tax excl. Shipping costs
Mairol hydrangea fertilizer

Mairol hydrangea fertilizer with alum

Blue flowers due to alum

Mairol liquid hydrangea fertilizer contains alum. This salt helps blue hydrangeas keep their color and suitable varieties with pink flowers even turn a strong blue due to the alum in the fertilizer.

If you have a blue hydrangea, the aluminum ions from the alum ensure that the blue color is retained. But the salt can do even more. If you have a delicate pink hydrangea species that can produce the dye delphinidin, these flowers will also be colored blue. By the way, acidic soil is also important for the blue color. You will find further information on how to dye hydrangeas blue below.

In the box on the right we have described how you can ensure a blue color when fertilizing hydrangeas. Liquid hydrangea fertilizer from Mairol is not only suitable for blue hydrangeas. Even intensely red or pink hydrangea varieties that do not turn blue produce magnificent, bright flowers with this fertilizer.

In addition to the impressively beautiful flowers, it also ensures vital growth. The mineral complete fertilizer optimally covers the needs of all hydrangeas. Balanced nutrients with an ideal phosphate content and iron chelate

  • ensure healthy growth,
  • strengthen the resistance of plants,
  • ensure long-lasting blooms and lush green leaves
of hydrangeas, camellias and ericaceous plants.

The liquid hydrangea fertilizer is also suitable for camellias and ericaceous plants because of similar needs. But the special fertilizers for ericaceous plants, heathers and camellias usually do not cover the entire needs of a hydrangea and do not ensure the formation of blue flowers.

Another note on the use of universal fertilizers. Blue grain, for example, is often used as a universal fertilizer. Although it provides the main nutrients nitrogen, phosphorus and potassium, it is not suitable for hydrangeas. The proportion of phosphorus in blue grain is far too high for hydrangeas. If your hydrangea is already showing deficiency symptoms such as yellowing of leaves or drooping flowers and leaves, it is best to use a special liquid hydrangea fertilizer. The necessary nutrients are available immediately after fertilizing.

Apply liquid hydrangea fertilizer

Fertilize hydrangeas – this is how to do it correctly. Our fertilizer is extremely productive. To use Mairol liquid hydrangea fertilizer, add 2 ml per liter of irrigation water. This is enough to provide the hydrangeas with all the nutrients they need. If you use the pre-fertilized water to fertilize hydrangeas once a week from March to July, the hydrangeas will remain healthy and develop magnificent, bright flowers.

Note: If the hydrangea is freshly planted, do not fertilize for the first few weeks. As a result, the roots grow stronger during this time because they search intensively for nutrients. You can start fertilizing hydrangeas after about four weeks.

For example, if you give a large plant a watering can with 10 liters of water, add 20 ml of liquid hydrangea fertilizer on the day of fertilization. One more thing: shake before use. There's nothing more to do – right?

This is how hydrangeas feel comfortable – requirements of hydrangeas in terms of soil, location and water

For a hydrangea to develop well, ideal nutrition is an important prerequisite. Like all living things, it has even more demands.

The soil must be acidic. The easiest way to achieve this is to use ready-made humus-rich hydrangea soil. Horn shavings, bark mulch or even coffee grounds ensure an appropriately acidic environment in the soil and maintain the pH value so that the hydrangea feels comfortable. A pH value between 4.5 and 5.5 is ideal.

Hydrangeas are very thirsty, but don't want to stand with their feet in water. Therefore, you should water thoroughly and avoid waterlogging at all costs. If you have a clayey subsoil, it must be dug deep enough and filled with humus before planting. Moisture must seep away so that the roots of the hydrangea do not remain in the water for too long. If the surface is difficult, it is better to water smaller amounts more often than to pour too much.

Do not use drinking water from the tap for watering. Tap water contains lime, which increases the pH value. Water with rainwater or well water. If you don't have the opportunity, you have to keep an eye on the pH value of the soil and, if necessary, add coffee grounds into the soil or mulch them if necessary. By the way: bark mulch binds nitrogen. Therefore, you should distribute shavings under the mulch during the growth phase. Incidentally, vinegar is unsuitable for hydrangeas and damages the plant.

The location for hydrangeas from sunny to partial shade is ideal if it also protects against wind.

Dye hydrangeas blue

Many hydrangeas are able to produce the pigment delphinidin. You can dye these flowers blue. To do this you need our liquid fertilizer with added alum. If you have bought a blue plant, the additive ensures that the blue color is retained. The balu coloring of hydrangeas observed in nature has long been a mystery. Two requirements must be met for the plants to produce strong blue flowers. Firstly, it needs alum and secondly, the soil must have an acidic pH value.

The Mairol quality guarantee for hydrangea fertilizer

  • Mairol Turbo-Active Effect: Selected chelated trace elements are immediately available to the plant.
  • NPK fertilizer 10 + 3.5 + 4
  • High yield: 1 liter of hydrangea fertilizer Hydrangea Vital for 500 l of irrigation water
  • Suitable for foliar fertilization
  • High-quality selected raw materials
  • For hydrangeas, heathers & camellias

Ingredients: NPK fertilizer 7 + 3.5 + 4

  • Nitrogen N: as an energy supplier, it is crucial for plant growth in every plant.
  • Phosphorus P2O5: ensures lush flowers and colors. It helps to strengthen the tissue and promote root growth and germination.
  • Potassium K2O: ensures strength and strength of the plant. It helps the hydrangea regulate its water balance and woody the shoots. This protects the plant from frost damage.

Mairol Hortensiavital complete liquid fertilizer supplies the plants with nitrogen, phosphate and potassium oxide. It also provides trace elements such as magnesium, boron, copper, iron, manganese, molybdenum and zinc.

  • Magnesium oxide MgO as an important component of chlorophyll is essential for the formation of green leaves.
  • Boron prevents dry rot in plants.
  • Iron promotes cell metabolism and ensures lush green leaves.
  • Manganese prevents dry spot disease.
  • Molybdenum is mainly needed for vegetables.
  • Nickel and vanadium significantly improve the absorption and effectiveness of other nutrients.
  • Zinc, even in the smallest amounts, brings about the healing and well-being of the plant.

The formulation of the fertilizer allows the plant to absorb these nutrient components immediately. The selected chelated trace elements are immediately available to the hydrangea.

Mairol hydrangea fertilizer is chloride-free and low in biuret.

  • 7% N total nitrogen
    • 1.8% ammonium nitrogen
    • 3.5% carbamide nitrogen
    • 1.8% nitrate nitrogen
  • 3.5% P2O5 water soluble phosphate
  • 4% K2O water-soluble potassium oxide
  • 0.02% B water-soluble boron
  • 0.005% Cu water-soluble copper as a chelate of EDTA
  • 0.11% Fe water-soluble iron as a chelate of EDTA
  • 0.02% Mn water-soluble manganese as a chelate of EDTA
  • 0.001% Mo water soluble molybdenum
  • 0.002% Zn water-soluble zinc as a chelate of

EDTA chelates are important for the utilization of trace elements. Chelators are organic molecules that bind metal ions and increase the solubility of trace nutrients. Iron, copper, manganese and zinc are chelated in this liquid fertilizer and are available to the plant right down to the plant cells after a very short time.

Necessary plant nutrients, which are only needed in very small quantities by the plants, are sometimes very important for the plants.

Fertilizer recommendation and dosage for Mairol hydrangea fertilizer

  • Fertilize hydrangeas once a week from March to July.
  • Dosage: 2 ml hydrangea fertilizer to 1 liter of irrigation water.

Mairol hydrangea fertilizer liquid allows your hydrangeas to grow healthily and ensures lush flowers. With over 100 years of experience and the highest quality, Mairol is a guarantee for the greatest possible success and well-being of your plants.





    • glombi wrote on 22.04.2020
    • Gut und günstig, nur zu empfehlen!

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