The whole area of 1500 square meters (0.4 acres) was before we started to plant covered by a layer of about 15-20 cm of macadam. This to create a good drainage and more important to prevent the planting from weed seeds in the existing soil under the macadam layer.
I guess we have to wait two or three seasons before this prairie planting has established properly. But I do think it then will be a real stunning show place so it is for sure worth all waiting.
The plants are suffering from the terrible scarcity of water
Most planted perennials have survived, but where are all the expected seedlings?