It's best to move the beans every year .. dig a two six foot deep trench about 18 inche wide and fill it to 12 inches deep with old folded newspapers then shove on 12 inches of really well rotted manure and then slightly ridge it with the soil ( it will settle ) firm things up by treading the ground in .
This gives a hot bed with a big water reservior.. The secret for beans and most veg is to keep the moisture at a constant rate for continuous steady growth.
For the frame I use four plastic covered two metre long green steel garden poles ( from a garden centre ) to make two inverted V 's , lash then together about four inches from the tops. Then across the tops in the base of the crossing point lash another 2 mtr pole in place this should give you a four legged frame with a cross bar .
I then pegged each end of the up rights out with two guy ropes at each end ....like a tent ,using some old 10 mm dia blue poly rope .. about 9 feet long for each guy rope .. this is now a stable frame.
I then cut 12 lengths of the old rope and taped the end area befor cutting them to give me ropes of about 9 feet long .
I made 12 pegs out of old roofing battons , each about 15 inches long with a hole big enough to take the rope , theaded the taped rope through the hole , knotted the rope at the end , then pushed the pegs into the ground , carefully tying the free end of the rope to the top bar to make a tent shape .
Then put my pot grown frost protected bean plants in at every rope anchor point including the guy ropes and grew a few spares in the middle as well.
Taking the frame down is a doddle ,. untie the top bar and remove it, then undo the bean ropes and slide the ropes out of the beans , cut the beans at ground height , compost the tops and dig in the roots
My bean poles & ropes have done five years of growing so far.
This picture that includeds the bean tent was taken last year , rejigging the gardens has not allowed me to get my beans going this year for there is a greenhouse where the beans were and if you look at some of my other posts you'll see just how much work has been done .
