Peas: put up a net and plant a seed every 2 inches? Is this only one side of net or both. If both how far from net do you go. I think last year I made it too congested.
One side of the net it doesn't matter which
The common way to sow peas is to make a shallow trench about one inch(25mm) deep and 4""-6" (100-150mm) wide and sprinkle the seeds thinly along the trench, most people are not too precise with measuring them it's sufficient that they are spread out rather than in groups.
The reason my peas look as if they have been measured out is because I start them off in cell trays so I lay the contents of the cell one by one along the trench.
Is it with very tall peas like Telephone that poles are sometimes used
I don't know that variety but if I were growing a tall variety I would just use a higher net.
With beans what length of pole do you favour?
Most people are governed by the length of the canes they can get which is usually 8' or 6'
You can tie two canes together if you want greater height but I see no point as then I would't be tall enough to harvest the beans.
You could consider using wire in lieu of canes the choice is your.
I hope that helps!