Suddenly appearing mushrooms in the lawn or circular areas are a sign of a lawn disease. Here we present the most important ones.
Juicy green, dense and above all strong - this is what the perfect lawn looks like. Every gardener's dream. In order for this to succeed, of course, a good deal of care is necessary. Of course, choosing the right seeds is also crucial. The experts at rasensamen.org recommend not only paying attention to the quality of the lawn seeds, but also to the appropriate use.
If you use poor quality, you risk later lawn diseases. Cheap seed is often already infected and causes diseases to break out more quickly. But not only the lawn seeds can cause diseases, incorrect care or certain weather conditions also influence individual disease patterns of the lawn.
In this article we would like to introduce you to the most important and most frequently occurring lawn diseases. At the same time, of course, you will also learn how these are treated.
Lawn diseases: The most important ones at a glance
]» Red thread
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One of the most well-known lawn diseases is red thread. If the infestation is very severe, the lawn may die off completely. Normally, however, the lawn recovers fairly quickly.
Recognize:
The red point can be recognized by the pink to reddish needle-like mushroom network, which spreads across the top of the stalks. In the advanced stage it can even happen that the culms stick together strongly due to the mycelium.
However, the initial stage is marked by a small brown spot in the lawn. The red threads form later.
Prevention and control:
Red tipping occurs when the soil has a lack of nitrogen, has been watered incorrectly, or has not been properly fertilized. Very long-lasting moisture and high humidity can also be the cause of thebe redheaded.
While you can't do much about the weather, you can take a few things into account when it comes to lawn care. To prevent the fungus, you should use a lawn fertilizer containing nitrogen and potassium (bestseller on Amazon.de). This compensates for the nutrient deficiency. It's also important that you aerate your lawn to give the soil good drainage. Remnants of leaves and grass should be removed completely, as these ensure that the lawn does not get enough air and light.
» By the way: Short lawns are more vulnerable than longer lawns. So don't mow too often or too short.
» Witch Rings
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Another lawn disease caused by fungus is witch rings. These are divided into three different types, which differ only in the appearance of the origin. The same control and preventive measures are carried out for all variants.
Recognize:
All three types can be recognized by a circular discoloration on the lawn. In most cases, mushrooms shoot out of the ground overnight - also in a circular shape.
Prevention and control:
Once the fungal infestation has appeared, it is not that easy to remove it. On the other hand, it would be better if the lawn disease did not appear in the first place.
Since the cause of the fungus on the lawn can be traced back to a nutrient-poor soil, it is important that you first carry out a soil analysis. The garden professionals from Gärnerei Pöschke show how this works in a very clear video on YouTube.com. The soil analysis tells you what kind of soil you have and how it specifically stores nutrients. This will ultimately tell you how often you need to add lawn fertilizer.
To prevent the witch rings you have to aerate your lawn with a scarifier (the easiest way is with an electric scarifier). If you do not scarify regularly, you risk matting the lawn and thus stopping the absorption of nutrients, which promotes the formation of witch rings.
But if the fungal network is to be combated, experts recommend soaking the mushrooms in water and filling them with sand. Cutting it up with a digging fork might also help. However, there is no guarantee of success here. In the worst case you have to take out the soil up to 30 cm and do a soil replacementmake.
» snow mold
Snow mold occurs primarily in the cooler seasons, such as some spring and fall. At around 10 degrees Celsius, it can develop magnificently. Snow mold is also a fungal disease of the lawn.
Recognize:
Snow mold causes small, dark brown or orange circular dots to form on the lawn. These get bigger over time and can spread further and further. Another important distinguishing feature is the wet grass, which can also be covered with a film of slime.
Prevention and control:
Snow mold only survives at temperatures up to 20 degrees Celsius. Then he dies. That's how long you have to wait. Then you should take measures such as scarifying. The bare spots must be reseeded. It is essential to use high-quality seeds to prevent a new infestation.
Always bear in mind that lawns need a lot of light and air. Snow mold develops much faster and easier on shady areas than in bright and sunny locations.
» leaf spot disease
Leaf spot disease is fairly common on grass blades, but does not cause significant damage. Whether spring, summer, autumn or winter - the disease can occur at any time.
Recognize:
The leaf spot disease can be recognized by brown to black, often olive-green spots on the leaves. The size, like the colour, can vary. Hardly any type of lawn is immune to this disease.
Prevention and control:
Particularly easy "prey" are stressed plants and lawns that are particularly compacted and a little older. Ensure sufficient air circulation by scarifying and aerating and always remove the clippings after mowing. This is the best way to prevent leaf spot disease. Regular application of fertilizer can also help here.
» root burn
Root blight is a lawn disease that tends to affect new seedlings. Root burn is less common in lawns that are already well developed. The main cause is overloading - too much fertilizer, drought, heavily compacted soil or thatched lawn. But it can also be due to the lawn seeds that were already infected before sowing.
Recognize:
The root gangrene is very easy to recognize. The culms hang limply, the root neck is light brown in color (see Figdries up) and there are often spots on the lawn.
Prevention and control:
In order to prevent the disease, it is important to pay attention to high-quality seed. Favor regular fertilizer applications and ensure optimal soil permeability.
Infested plants can be easily pulled out of the ground. Simply overseed bare spots.