walled garden

[diana]

I have a barn which I want to turn into a walled garden it measures 20ft by 14ft is this possible or would I get problems with wind turbulance ( I live in a very windy place) Is there someone out there that could calculate how low the walls should be for the size of the barn. The two end walls face south and north and the two side walls face east and west.

Or should I just buy a polly tunnel

[diana]

walled garden

Sorry got the measurment wrong it is 38ft long by 14ft wide