Using Lime Against Moss In The Lawn: How Lime Can Help

You have problems with moss growth in the lawn and wonder if lime helps against moss in the lawn?

Then you’ve come to the right place, because I explain why you can destroy moss with lime and which lime really helps against moss in the lawn!

Kalk gegen Moos im Rasen

Lime can be used against moss in the lawn as it neutralizes the soil pH and thus creates better growing conditions for the lawn, while displacing the moss that prefers acidic or alkaline soils. To destroy moss on the roses should be used garden, algae or dolomite lime with the highest possible content – at least 80% – of calcium carbonate (carbonic acid lime).

Can lime be used to kill moss in the lawn?

Moss can be controlled with lime by raising the soil pH to the point where it provides poor conditions for moss growth, thus displacing the moss.

In other words, lime does not directly destroy the moss (as other means, such as scarifying, do), but ensures that moss no longer has a suitable nutrient medium to grow in, causing it to slowly recede. At the same time, the lime creates an optimal soil pH for lawn or other plants to grow better again.

Although mosses are very robust plants and can grow on many different substrates, they primarily prefer lean, nutrient-poor and moist soils.

Regardless of pH, mosses can grow well in both acidic and alkaline soils while these conditions are difficult for turf or other plants.

However, if the pH comes back into the neutral range, where the other plants also feel comfortable, their growth is stronger than the moss growth.

Which lime to use against moss in the lawn?

You should use carbonic acid lime against moss in the lawn. Carbonic acid lime is also known under the official name calcium carbonate or colloquially as garden lime.

Carbonic acid lime is also the main ingredient of algal lime or dolomite powder/lime (limestone powder), which is therefore also very suitable for combating moss in the lawn.

The advantage of carbonic acid lime is that it is easy to apply in the home garden and it is less aggressive and therefore less harmful than quicklime or slaked lime.

If you want to know exactly how lime works in the soil, check out this article.

Garden lime comes in a variety of types that differ in exact composition, grain size, quantity and price range.

The differences between the various types of lime are very small, but can still be interesting and important in making the right choice for the best lime for moss in the lawn.

So, in the table below, I’ve compared the most popular limes and a few more interesting ones so you can figure out which lime to use against moss in your lawn.

Which lime to buy against moss?

To combat moss in the lawn, you should buy a garden lime with the highest possible content of calcium carbonate (CaCo3) or carbonic acid lime. This is because the lime neutralizes the soil pH and thus promotes lawn growth or suppresses moss growth.

As long as you buy a commercial garden lime, algal lime or dolomite lime, you basically can’t go wrong, as all of these products contain mainly carbonic acid lime and are partially designed to kill moss.

However, not all limes list the exact percentage of calcium carbonate in the product description. Other substances contained in lime are often magnesium or, in some cases, potassium, both of which strengthen plant growth and robustness.

In general, you should consider the following points when buying lime against moss in the lawn:

As high a proportion of calcium carbonate (CaCo3) or carbonic acid lime as possible.

Granules that can be spread with a spreader (can be spread more easily on the lawn)

Organic or conventional quality (my recommendation: organic, as you can see from the comparison in the table below that organic quality does not necessarily have to be more expensive than conventional garden lime)

Other ingredients like magnesium or potassium, depending on what other fertilizers you want to apply.

When should you lime the lawn to remove moss?

It is best to liming the lawn before or after a growing season, either in the spring after the snow has melted and the lawn is no longer frozen, or in the fall after the last mowing.

Ideally, the lawn should be thoroughly scarified before liming in both spring and fall so that any remaining moss is removed and the soil is well aerated so that the lime can work directly.

Depending on the region, soil conditions and weather, the lime requirement of the lawn may vary.

As a rule, however, it is sufficient to lime your lawn once every 3 years.

However, if you want to know more precisely whether and how much lime your lawn needs, you should do a pH test or visit this article, which tells you more about the lime requirements of the garden.

Can you sprinkle lime and fertilizer together on the lawn?

Lime and nitrogen fertilizer should never be spread on the lawn together, because otherwise the effect of the fertilizer will be greatly weakened and the misses its target.

There should be at least 2 to 3 weeks between spreading lime and fertilizing the lawn. This allows both substances to develop their full effect independently of each other without causing undesirable, negative interactions.

If lime and fertilizer were spread on the lawn at the same time, the calcium and magnesium carbonates contained in the lime would react with the ammonium in the nitrogen fertilizer, which is not desirable.

The aim of the nitrogen fertilizer is that the ammonium reacts with water only in the soil and develops a fertilizing effect there and not already when it comes together with lime.