This year we decided to grow some peas, both sugar and snow. They were sowed fairly early in the season well before the danger of frost had passed. There were a few cold spells including some snow and hail and they faired quite well.
Once they all sprouted and had reached a few inches in height the issue of trellising needed to be addressed. I have ordered some bamboo and bamboo lashing which is on the way but decided to make do with what we had around the house in the mean time.
I decided to go with a ladder trellis with rope spaced about 8-10″ apart. I really have no idea what the ideal spacing is but this looked just fine to me. The posts are 4′ plastic stakes which we have plenty of. One on each end and one in the center. The stakes were sunk down to the bottom of the bed giving them some support. Each end stake is reinforced with rope anchored to the corner post of the raised bed itself to keep them from collapsing. Once the stakes were reinforced the rope was strung and tied off. Only 3 levels were added initially. I can always add more later.
Now lets see how quickly they can climb!