| In the diagram above the three central posts can be wooden but I would recommend 50mm angle iron. They need to be 8 foot long with 2 foot in the ground and planted no more than 8 feet apart.
The diagonal posts (straining posts) at each end need to be about 6 foot long and planted at about 45 degrees and down to about half way.
Connect all three central posts with wire and then connect the outside posts to the straining posts with the same wire. Now you can insert a sturdy stick between the wires connected to the staining posts and gently twist. This will pull the posts apart and make sure the wire along the top is taught.
The best thing to use for the runner beans to climb up is bamboo canes but any 8 foot sturdy pole will do. Push them firmly into the ground approximately 18 inches apart and attach at the top with decent string or thin wire.
Your structure is now ready for your seeds or young plants. |