June 4, 2026, 6:00 am | Read time: 3 minutes
After letting the lawn rest a bit in May, we can fully restart in June. Dr. Harald Nonn, former chairman of the German Lawn Society, reveals what you can do for your lawn in June—and what you should avoid.
In June, the weather can sometimes be quite changeable. Some areas experience a lot of rain, while in others, the sun shines nonstop. It’s important to keep an eye on the weather to react promptly and appropriately. This way, you can fully care for your lawn in June.
Fertilizing
In June, it’s time to check if the lawn needs fertilizing again, explains Dr. Harald Nonn when asked by myHOMEBOOK: “It’s important to check now if the nutrient supply is in order. Otherwise, you should fertilize with a complete fertilizer, an NPK fertilizer, preferably a long-term lawn fertilizer.”
Another indication of a nutrient deficiency, according to the expert, is a fungal disease called “red thread.” “The tips of the blades are reddish. At first glance, it looks like small dry damage. But if you look closer, especially in humid weather, you can see a reddish fungal mycelium forming at the tips of the blades,” explains Dr. Nonn.
This phenomenon means that the grasses are not growing well and lack nutrients, the expert further explains. What you can do about such a fungal infestation is detailed by the German Lawn Society on its website.
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Watering
When it comes to watering, there’s an important point to consider, explains Dr. Nonn: “Relatively infrequently, but deeply rooted, so that the root tips also get water in the deep soil layer.”
If you don’t follow this rule, you might damage the lawn: “If I water too often with too little water, I bring all the roots up, and I get a lawn that’s very sensitive to drought,” explains the lawn expert.
As a tip, Dr. Nonn advises stepping briefly on the lawn. If the grass blades stay down, it’s a sign that you should water the lawn.
Mowing
Even in June, it’s important to mow the lawn regularly. If the lawn has enough water and nutrients at this time of year, it only needs to be mowed once a week, reveals Dr. Nonn. It’s a bit different with a robotic mower: “I would have the robot mow at least every other day, preferably every day,” advises the expert.
Whether you can leave the clippings depends on the weather: “If it rains more often, you have to consider whether the clippings can stay because they clump relatively quickly in wet weather.” This can even be the case with robotic mowers.