When should I start applying fertilizer for the first time?
The right time for the first fertilization of the year depends less on the calendar date than on temperature and growth. There are several tried-and-true ways to determine the optimal time to start.
Ways to Determine the Right Time
🌱 Traditional time: March
In most years, the first application of fertilizer takes place in March.
As soon as temperatures rise and the lawn visibly begins to grow again, you can apply fertilizer.
🌼 Forsythia as a Natural Landmark
The blooming of forsythia is considered a reliable indicator plant.
When it blooms, conditions are usually ideal for the first lawn fertilization.
🌡️ Measure soil temperature
One very accurate method is to measure the ground temperature:
Mineral fertilizer:
Fertilize when the average soil temperature has been 8 °C or higher for several daysOrganic Fertilizer:
Fertilize when the temperature reaches about 10 °C, since soil life needs to be active at this temperature
The temperature can be easily measured using a thermometer placed in the soil.
➕ Calculate the heat summation
For anyone who wants to know the exact details:
Starting in January, all daily average temperatures will be added together
As soon as the heat sum reaches 150 °C, it is time to begin fertilizing
Important Information
Always check the weather forecast
→ If severe frosts are forecast, fertilization should be postponed