Many problems that occur in our gardens are due to poor soil structure (poor nutrient uptake, dying plants, excess water in the top layer, grass that doesn't get any denser...). Once the garden has been laid out, it is no longer easy and sometimes even impossible to improve the structure of the soil under the lawn and between the ornamental plants.
That’s why the ideal time, and often also the only possible time, to prepare the soil thoroughly and to incorporate a safe organic soil improver is when you are laying out a lawn or (trans)planting ornamental plants. So don’t forget this step!