Fertilize with Blue Grain: Pay Attention

Fertilize with Blue Grain: Pay Attention

Almost every hobby gardener has ever heard of the so-called Blue Grain. Many have even used this fertilizer before. However, many people do not even know that not every soil needs a fertilizer. Often it is even the case, for example, that the lovingly tended lawn behind the house is even over-fertilized. Many soils naturally have high levels of nutrients, not least because of the abundance of living creatures that thrive in the soil. Excessive fertilization would end up hurting the plants rather than making them feel good. It looks different, however, if, for example, the apple tree, the tomatoes, the zucchini or the lawn do not really want to get going. In this case, a little help from a fertilizer will not hurt you. For generations, hobby gardeners in particular have been swearing by fertilizing with blue-grain. But what exactly is blue-grain and what is it about this fertilizer? What exactly is blue-grain?

Most people know about blue-grain, but they are not at all aware of what that is. This is a so-called multi-nutrient fertilizer. Developed and launched on the market was the mineral product, which is actually sold under the trade name Nitrophoska, in 1927 by BASF. This product name was created by the three most important nutrients:

nitr (o)

  • -at, ie nitrogen Phos
  • -phat Ka
  • -lium Blue Grain also contain magnesium and sulphate (sulfur). The fertilizer is mainly due to one of its two forms, in which it is available. Although the fertilizer is now also available in liquid form, but also in solid form. These are small, blue globules.

In agriculture and horticulture in particular, blue-grain fertilization is familiar, but this full-bodied fertilizer is also very popular among hobby gardeners. Blue Grain is known to help the plants, especially the main nutrients nitrate, phosphate and potassium, to grow quickly and, above all, vigorously. When fertilizing with blue seed, however, you should always handle responsibly and also follow some tips.

When fertilizing with blue seed you should under no circumstances exaggerate it. Excessive overdosage can cause too much nitrate pollution on the soil and thus on the groundwater, especially as blue-grain is not the best choice for all plants in the garden.

So fertilization with the complete fertilizer in your home garden is crowned with success and not turns negative, you should take enough time in any case. First, get all the application possibilities in experience. Also note that there is not just one Nitrophoska, but several. Each product has a different composition. As a result, depending on the plant, there is another application.

How much fertilizer does the soil really need?

If neither the lawn nor the fruit or vegetables do not want to grow quite well, although the location is perfect, the sunshine optimal and also If the irrigation is ideally chosen then you should let the soil analyze its composition. Often, such a soil sample brings much more light into the darkness. You do not need a specialist for this, but you can also submit the soil sample yourself to a laboratory at any time. As soon as you know which nutrients are present in which concentration in the soil, you can also fertilize them specifically. Be prepared, however, that just the opposite could come out of what you expect, because in most cases the soil is heavily overfertilized. This is often reflected, for example, in reduced growth.

Fertilize Lawn with Blue Grain

One area that is most often fertilized by amateur gardeners with blue-grain is the lawn. Again, you should definitely pay attention to the dosage instructions of the manufacturer, you should strictly comply. The best time to provide the lawn with nitrogen, potassium and Co., is the time between March and April. Ideally, the lawn is dry with a light moisture. He should not be completely dry. Immediately after spreading the fertilizer, the lawn is watered generously. Although you could dissolve the fertilizer in water and then deploy with the watering can. However, most of the nutrients would not reach the roots, but would rather seep into the groundwater.

When fertilizing the lawn you should definitely not use too much fertilizer and repeat the process at the earliest after about four weeks. If the lawn is over-fertilized, this can quickly lead to the end of the entire lawn area, as the plants can sometimes completely die off.

Fertilize vegetables and flowers with blue-grain

There are also many in the flowerbed and even in the vegetable garden Plant that can be very well supplied with blue grain fertilizer. Of course, the correct dosage is important here as well. Only if everything is right, your flowers, such as the rhododendron, will carry magnificent flowers and the vegetables will thrive neatly. Unlike the grass, the soil in this case should not be dry, but slightly moist. Depending on how the dosage fails, the fertilizer can be distributed accordingly. Make sure, however, that the blue grains do not come into direct contact with the flowers or the leaves of the plants, as they can otherwise quickly be damaged. Work the fertilizer a little bit into the soil and then water it well.

Many plants will quickly thank you for providing them with plenty of nutrients. In addition to perennials or ornamental shrubs, these include, among others, such starvation sufferers as tomatoes, cucumbers or potatoes. Various fruit trees are always grateful for an extra dose of phosphorus, nitrogen and potassium, but here too everything is in moderation.


In addition to farmers, many hobby gardeners are always happy to turn to blue-grain fertilizers. When fertilizing with blue seed, however, there are some things to consider, so you do not end up doing damage to the plants.

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