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Lime cyanamide a wonder product for the (vegetable) garden, or not


Lime cyanamide is a (controversially) slow-acting and nitrogen-rich fertiliser. Besides nitrogen, this product also contains lime. One product with several purposes, you would think, nice and easy! But lime cyanamide does not only have advantages. In this article, we weigh up the pros and cons of this fertiliser.

Nitrogen and lime in 1

Lime cyanamide slowly and evenly releases nitrogen into the soil. The lime in the fertiliser raises the pH value. Due to the combination of these 2 substances, the result is quickly visible.

The most important advantage of calcium cyanamide is its price. Perhaps that is why this fertilizer is so well-known. So you fertilize and lime with 1 product.

Cautious use

Calcium cyanamide should be handled with care. Always follow the indicated dosage and safety instructions carefully. You really do not need much (general dosage for lawns is ± 2 kg/100 m²). Do not use this product on a young lawn and/or in warm and sunny weather as it could burn. Also, if used incorrectly (too high a dose or not distributed well), your lawn can burn very quickly.

Do you want to use calcium cyanamide in your lawn? Test, for example, a small area first before treating your entire lawn. We have had several customers where the lawn was completely burnt by a too heavy dose and/or under the wrong weather conditions.

Is the purpose maintenance?  Then use a fertiliser such as Viano 4-in-1 or BSI Green Star which contains a (small) dose of calcium cyanamide instead of the pure calcium cyanamide.

The timing of the administration of calcium cyanamide is also essential. For this, it is important to understand how this product works:

First operation:

Under the influence of mainly moisture, the calcium cyanamide will start to react. During this phase, which lasts about 2 weeks, it is important that this process does not stop. This usually happens when the grain becomes dry. You can avoid this by moistening and working the fertiliser into the soil.

Second operation:

After the first reaction, the nitrogen will be released slowly, and you will therefore get a long-term fertilisation of about 2 months. This product should therefore always be used in damp and not too warm conditions. Spread the fertiliser at least two weeks before sowing or planting, and then work in with a rake. Keep the soil slightly moist for the first two weeks after treatment!

Harmful to bees & birds

Lime cyanamide may provide your lawn with various elements such as nitrogen and lime, but this product does not only have advantages. It damages soil life and is also very toxic to bees. This fertiliser does not do birds any good either. For this reason, calcium cyanamide is not allowed in organic farming.

The pros and cons at a glance

➕ small dose needed: very cheap all-in-one treatment
➕ works for a long time and gives fast results
➖ disturbs the natural balance of your soil
➖ harmful to bees and birds
➖ very accurate (can burn the lawn) and gentle to use

Conclusion

Many make calcium cyanamide sound like a miracle product for your garden. But there is a big ""but""! Lime cyanamide may have many advantages, but it can also cause serious damage to your garden through burning, and it is not good for natural life. So, as always, it is a balancing act: Do you want to garden ecologically? Then it is better not to use this product. However, do you want a cheap all-in-one product to make (vegetable) gardening easy? Then calcium cyanamide is ideal. So it can be a good and useful tool, but don't use it right away, and respect the recommended dosage and safety measures!
Did you know: Adding calcium cyanamide to the compost heap will speed up the composting process. It will also reduce odour nuisance.

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