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Fertilize grapevines - Here's how

Fertilize grapevines - Here's how

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They are not only an ornament on every house wall or in the trellis, they also produce delicious fruits: grapevines. However, they only thrive if you fertilize them properly.


Grapevines need a lot of care so that they stay healthy (i.e. there are no diseases on the grapevines) and produce a rich harvest. In addition to regular pruning, fertilization is also part of the maintenance measures. The nutritional requirements of the grapevines are very high. This is because they are cut back heavily every year. For this reason, regular application of fertilizer is essential.

It is best to fertilize with an organic and a mineral fertilizer. If you were to give only an organic one, there could be a lack of certain nutrients.

In addition to potassium and nitrogen, grapevines also need boron, iron, magnesium, calcium, copper, manganese, phosphate and zinc. In order to be able to select the fertilizer correctly, you should have the soil analyzed every four to six years.

When and how are vines fertilized?

➤ First fertilization in spring:

The main growth of the vines begins in April. Then the grapevines need a complete fertilizer that is rich in nitrogen. In addition, you should give the plants an organic fertilizer, for example in the form of compost or stable manure. The compost enriches the soil with nutrients, which the vines can then feed on into autumn. In addition, the structure of the soil is improved by the use of compost and factors such as moisture, oxygen content and heat are positively influenced.

➤ Second fertilization in autumn:

In September it is time for the second fertilization of the vines. At this point, the plants need potash, because the potassium helps the wood to ripen and prevents frost damage. If you live in an area with predominantly dry weather, you should apply a layer of mulch to better keep moisture in the soil. It also improves the soil structure and protects the important living things in the soil. The mulch layer also suppresses weed growth.

As mulch you can use either bark mulch, straw or lawn waste. If it rains enough, you can alternatively sow a clover-grass mixture. (Reading tip: planting grapevines - explained step by step)


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