Blade root section made of prestressed concrete

A root end device for a blade of a wind turbine, the root end device comprising

• a root end element comprising along a longitudinal extension a first axial end and a second axial end which is arranged opposed to the first axial end, wherein the first axial end is coupleable to a hub of the wind turbine and the second axial end is coupleable to a blade section for transferring a compression force between the hub and the blade section via the root end element, and
• at least one tension element which is arranged at the root end element between the first axial end and the second axial end,
• wherein the tension element comprises a first fixing section and a second fixing section such that the first fixing section is coupleable to the hub of the wind turbine and the second fixing section is coupleable to the blade section for transferring a tension force between the hub and the blade section via the tension element.