Snow mold (Fusarium nivale) and Typhula rot (Typhula incarnata)
If the lawn remains under a blanket of snow for a long time in winter, snow mold and typhula rot strike. There are two of them Fungal infectionsthat find ideal conditions at 0 to 8 degrees Celsius. You can recognize the diseases by round, grayish-white spots that gradually turn brown. In the absence of approved fungicides, control is limited to the following preventive measures:
- Scarify the lawn every spring
- Consistently sweep away leaves and clippings
- Do not use nitrogen fertilizers
also read
- Lawn diseases: Fungi develop when it is wet and poorly ventilated
- Pests in the lawn - recognize and drive away
- The 2 most common problems with the grass trimmer line - tips & tricks
The most effective way to combat these lawn diseases is summer weather. As soon as the mercury column exceeds the 20 degree mark, the brown spots recede.
Brown Patch (Rhizoctonia solani) and Yellow Patch (Rhizoctonia cerealis)
While beautiful summer weather gives the all-clear for snow mold, the next lawn diseases are already lurking. Brown Patch defaces the well-tended green area at temperatures of 25 to 30 degrees Celsius, recognizable by putrid brown to reddish spots. If the temperatures fluctuate around 20 to 25 degrees, Yellow Patch strikes with yellow-brown spots. Again, the focus is on prophylaxis for successful control. That's how it's done:
- After scarifying the lawn sand
- Never water more than absolutely necessary
- Once a year the grass area aerate
If a lawn is infested or threatened by fungi, the dosage of the irrigation is given additional relevance. Since the fungal pathogens prefer a warm and humid environment, summer drought suits the troubled gardener very well. Of course, the lawn must be watered so that it does not dry out completely. Therefore, avoid watering that ends up in puddles on the lawn.
Witch rings (Marasmius oreades and others)
In earlier times they were said to have magical powers. In fact, witch rings are a fungal infection that occurs regardless of the weather. You can recognize the lawn disease by dark green rings, in the center of which the stalks turn brown. As the process progresses, the lawn dies here. How to take targeted action against witch rings:
- The affected areas with the Digging fork loosen about 15 cm deep
- Fill the holes created with sand
- Then distribute overseeding and fertilizer on top
In view of the high pressure of infestation, you cannot avoid a radical soil replacement. In this case, bag the damaged areas 15-20 cm deep to fill them up with compost and sand. The reseeding is carried out over this. It is even faster if the gaps are closed with pieces of turf.
Tips & Tricks
In order to repair individual damaged areas in the lawn in a short time, the magical lawn paving has proven itself very well. Simply remove the dead lawn stains up to 20 centimeters beyond the ring. Spread the lawn pavement 3 millimeters thick and water it. The mixture consists of rapidly germinating Lawn seeds, Coconut flakes as well as fertilizer and thrives on any normal Garden soil.