At graszaadselect.nl, you will find various soil improvers such as this Ecostyle AZ Lawn Fertiliser. Value pack of 36 bags, 20 kg each. - Nowhere cheaper

This fertiliser is rich in potassium for extra protection against the cold winter. It increases the lawn ‘s resistance to winter conditions.

Do you have a drought-sensitive garden? Then sprinkle Lawn-AZ+ Drought Protection! This drought protector protects grass against heat and drought.

EcoStyle Lava meal - Improves soil structure and fertility - Accelerates composting - For healthy, beautiful and strong plants.