Skip to content

Fertilize lawn in spring: when, how often and before or after scarifying? All important questions answered

A lush green lawn is the dream of many amateur gardeners. To ensure that the lawn pleases the eye all summer long, good care is crucial. When the temperatures rise in spring, the grass comes out of winter dormancy and begins to grow again. Now is the time to provide it with the nutrients it needs. We explain when and how often you should fertilize the lawn.

Fertilize the lawn: When in spring is the right time?

Fertilize lawn when in spring which fertilizer

In spring, when temperatures rise above 5 degrees Celsius, the growth period of grasses begins. Accordingly, the need for nutrients also increases, which can only be met with the help of the right fertilizer. To determine the right time to apply fertilizer, first check the soil quality.

The rule of thumb is: the looser the soil, the less nutrients it contains and the earlier it should be fertilized. A loose soil can be fertilized even in mid-March. An impermeable, loamy soil usually contains more nutrients and can also be fertilized in late March.

When to fertilize the lawn? Temperatures should be above 5 degrees Celsius.

Fertilize lawn with special fertilizer tips

The weather also plays an important role in the final result. As soon as the permafrost is over and daytime temperatures do not fall below 5 degrees Celsius, fertilizing can begin. Fertilizing is done on sunny, frost-free days.

Can the lawn be fertilized when it rains or immediately after watering?

Watering lawn after fertilizing important

For the time being: the lawn is fertilized dry. If you fertilize when it rains, you risk the fertilizer becoming sticky and sticking to the blades of grass. After fertilizing, however, the lawn must be watered. The water washes the fertilizer off the grass blades and loosens the soil. This allows the fertilizer to penetrate the lower layer of soil. If you want to save yourself the trouble of watering, pick a day with sunny weather in the morning and rain in the afternoon.

How often to fertilize the lawn?

Which fertilizer to take for lawn in spring


In the spring, fertilize the lawn only once. Depending on whether it is a heavy or lightly used lawn, it can be fertilized a second time in the spring or right in the summer. The lawn is then given a final application of slow-release fertilizer in the fall.

Fertilize lawn: Before or after scarifying?

Scarify grass in the spring why is important

Spring lawn care traditionally starts with fertilizing in March. Several days after that, the lawn is mowed. The lawn height should be between three and five centimeters.

Fourteen days after fertilizing the lawn is scarified. The timing is perfect: on the one hand, the grass is already supplied with nutrients, and on the other hand, it rains frequently in April. Thus, the lawn can recover well before the dry period comes in May.

Use lawn fertilizer or home remedy?

Gardening in March fertilize lawn tips


A suitable fertilizer can provide the garden soil with important nutrients and improve the soil structure. But which fertilizer is best to use?

The liquid fertilizer is less suitable for the lawn. Unlike fertilizers in powder form, it cannot be evenly distributed on the lawn.

A lawn fertilizer contains nitrogen, humus and other nutrients that the lawn needs to grow quickly.

Should the lawn fertilizer contain weed killer? Special fertilizers that contain weed killers are sold in garden centers, among other products. However, you can do without them. In most cases, it is enough to provide the lawn with nutrients and mow regularly. Healthy grass forms a garden carpet and suppresses weeds. Where the lawn is between 3 and 5 cm high, weeds also cannot thrive.

Fertilize the lawn with blue grit

When and how often to apply fertilizer to lawns

The blue grain is a water-soluble fertilizer, which is suitable for soils poor in phosphorus. However, its application is only considered when a soil analysis is available. A soil analysis is carried out in specialized laboratories. Based on the results, certain fertilizers are also recommended.

Does iron fertilizer help against moss?

Lawn care in the spring in March dethatching tips

If in spring the lawn looks bare and unkempt and moss has spread, then quick action is necessary.  More and more amateur gardeners are trying to combat moss with iron fertilizer. The fertilizer may help in some circumstances, but it has a short-term effect. This is because the fertilizer increases the acidity of the soil. The moss does die, but often the lawn is affected as well. The grass is significantly weakened, grows very slowly and cannot form a dense carpet. This gives weeds, pests and moss a chance to spread in the summer and attack the grass again.

Fertilize the lawn with coffee grounds

Keep grass carpet green and fresh with fertilizer

When it comes to a natural garden fertilizer , most amateur gardeners turn to coffee grounds. It provides the grass blades with the necessary substances and protects them from fungi. However, you should pay attention to the correct dosage when fertilizing, because the coffee grounds can increase the acidity of the soil.

To avoid this, you can simply add the coffee grounds to the compost and then fertilize the garden soil with them in the spring.