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How to make a bamboo polytunnel

How to make a bamboo polytunnel
We used a local renewable material, caña (like bamboo). You could use anything long and bendy – we would like to try it with hazel next time we are further north. The only items we paid for are the plastic and string (pita string made from fibres of the giant succulent Agave plant). It took six days with four people working. It's a lovely material to work with, flexible, strong and graceful. The challenge throughout is to balance and work with the natural forces of the material. Step 1 Select locally growing caña and do a flex test. Step 2 Strip the outer leaves and bumpy nodules from the canes. Step 3 Bundle into a column of 7 canes tying with string at 25cm intervals. Step 4 Join one column to another to form a super column. Step 5 Dig holes to place feet of arches into. Step 6 Create smaller columns of 3 canes to act as supports between main arches Step 7 Protect plastic by covering outside edge of all canes with fabric or folded netting/fleece. Step 8 Roll plastic over the structure. Step 9

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