CLAY SOIL AND GYPSUM
Can anyone give me some advice. I have recently moved to a new property which has a large garden but nothing has been done, so starting from a blank page. At the bottom of the garden there was once a border which has now completely overgrown with weeds. The length of the border is approx 16metres and 2 metres wide. The problem I have is the soil is heavy clay. I want to completely turn over the area ready for planting a new border. I have read positive and negative reviews on various websites about using Gypsum to break up the soil. I realise that I would need a vast amount to cover the area and would be costly but if it works, i'll go with it. Has anyone had any experience of using Gypsum on heavy clay soil. I will also be incorporating compost and composted bark to help break down the soil.
Any advice regarding Gypsum would be greatly appreciated.