Good evening Blackbird,
I hope you had a great day. Runners/pole green beans will yield twice (2x) as many beans as bush green beans. The bushes also make it easier for snails, slugs, cutworms, and other insects to hide under. They will attack or eat any bean which touchs the ground. Grow, plant, fertilize, and treat the pole green beans the same way you did your french beans.
I have nine (9) fruit trees and a 20x20 ft vegetable garden. We give family and friends a big basket full of fresh and dried fruits and quart jars of difference types of vegetables as gifts at Christmas time. We have been canning, drying, and picking like this for years. They love to see us coming.
A ten (10) foot long roll of pole beans, properly planted (sun and fertilized) will easily yield 40 pints to green beans. You will have to pick and can every 7 to 10 days, depending on weather.
Tips: Try planting a few purple green beans to mix in with your green beans. You have less problems with insects. Caterpillars do not want to be seen against a purple background. This makes it easier for birds and wasps to find them. Also plant some basil and dill. These herbs draw wasps which attack the enemy insects, especially caterpillars on your plants. You can also use the herbs for cooking and canning.
http://www.ehow.com/how_4487462_grow-purple-beans.html
http://images.search.yahoo.com/search/images?_adv_prop=image&fr=yfp-t-701&va=purple+green+beans
WARNING about canning green beans:
If you have never canned green beans before, beware of "Botulism". It is NOT SAFE to use the water bath method on green beans. You MUST use a pressure canner.
You and your family have a beautiful week. Peace, from Los Angeles.