Lawn care in summer

A well-kept lawn gives the garden a special atmosphere. It invites you to relax, enjoy and play. With our tips for lawn care in summer, you are guaranteed to enjoy a lush green lawn.

How to properly care for your lawn in summer

High levels of precipitation or summer heat make life difficult for every lawn. With the right knowledge about the needs of grass, you can call a lush green lawn your own, even in extreme conditions in summer. We provide you with helpful professional tips , with which lawn care is guaranteed to be successful even in the warm season . Especially in hot years, lawn care in summer takes time, but it’s worth it! In addition to fertilizing the lawn in summer, make sure that you water your lawn as needed when you look after it. Summer and heat make things difficult for the green.

1st tip: Mow the lawn – the most important thing when it comes to lawn care in summer

Mow your lawn every 4 to 7 days in early summer. By mowing regularly, you promote the density of the lawn , because the grasses form new side shoots. As the temperature rises, the interval between mowings can be increased. It is important that the cutting height is adapted to the temperature .

Our gardening tip: a cutting height of 3 to 4 cm is ideal for an ornamental lawn, but you should increase the cutting height to 5 to 7 cm during hot periods. If you mow too deep when it is hot, the lack of water will result in unsightly burns and weeds will grow through faster. It is important not to mow your lawn when it is wet and to ensure that the lawnmower blades are sharp.

2nd tip: fertilize the lawn in summer

Sufficient nutrients are necessary for a dense, lush green lawn . And that’s why fertilizing your lawn in summer is important. If your lawn suffers from a lack of nutrients, you will recognize this by the reduced growth and the fading green colour. Special fertilizers contain the nutrients necessary for healthy growth in a special mixing ratio. In summer it is advisable that you use a slow release fertilizeruse. This releases the nutrients over the course of about two months. Your lawn will also receive intensive strengthening from Kölle’s Beste lawn fertilizer with immediate and long-term effects. This complete fertilizer contains a combination of fast-acting and lasting nutrients. So you can see the effect after 1 week and be sure that the nutrient supply is guaranteed for 6 to 8 weeks. The organic component contained in the fertilizer ensures improved humus formation.

Essential nutrients for lawns are:


mode of action

nitrogen (N)

responsible for growth and green coloration

Phosphorus (P)

promotes root growth

Potassium (K)

Strengthens the grass against drought, cold and diseases Our gardening tip: It is important that the fertilizer you use has the right nutrient ratio . Fertilizers with too high a proportion of immediately available nitrogen have a quick effect, but not in the long term, sometimes even leading to combustion in summer. Therefore, pay attention to the quality of the lawn fertilizer.

3 characteristics of a high-quality lawn fertilizer are:


• Nutrients are contained in the right ratio.
• Special fertilizer has a long-lasting effect.
• With exact dosing there are no burns.

From the beginning of September you should use an autumn lawn fertilizer . This contains a reduced proportion of nitrogen and high levels of potassium, which play an important role in preparing the grass for winter.

3rd tip: Water the lawn – an essential lawn care. Summer and sun otherwise mean stress for the grass.

Did you know that grass has a water content of 90%? It is therefore important, especially in the warm summer months, that you regularly help your lawn to survive the dry phases. If there is no precipitation, you have to remedy the situation with penetrating watering and thus counteract the dying of the lawn grasses. Watering the lawn is one of the most important aspects of lawn care. Summer and heat make things difficult for the lawn.


  • Lawn watering in the early morning or late evening
  • Water 1 to 2 times a week depending on the temperature and soil conditions
  • The lawn should be given 10 to 15 liters/m2 of water per irrigation cycle
  • It is important to water the lawn after fertilizing the lawn in summer, this is the only way to avoid burns.
  • If trees, hedges or shrubs grow nearby, increase the watering requirement.

    This is the best way to check whether your lawn watering is sufficient

Poke a spade about 15 cm deep into the lawn and check the penetration depth of the water. The soil is sufficiently moistened when this 15 cm is reached. The roots of the lawn grass are thus stimulated to follow the water supply and can optimally supply the plant.

Optimum technology for lawn irrigation

Lawn sprinklers are ideal for watering large areas, because they allow you to reach the entire lawn and achieve even water distribution. Efficient and water-saving lawn irrigation systems are becoming more and more popular . Here, pop-up sprinklers are laid in the lawn and started manually or fully automatically using an intelligent control system. We would be happy to advise you in our garden centers. Our service team will also be happy to advise you and, if you wish, will equip your garden with high-quality, state-of-the-art irrigation technology.

Tips & things worth knowing about the lawnIn our articles you will find out everything you need to know about the lawn and care and what you can do when the lawn is burnt.

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