Interesting! One theory about permaculture is that "coppiced" trees do better because the roots don't need to "regrow". However, I've also read that one of the "survival tricks" of annual plants is that they grow fast and produce seeds all in one year. This was discussed somewhere that was talking about developing perennial wheat. The researchers suggested that rather than the perennial plants being more productive, they were actually less, (particularly compared to modern varieties which are designed for production rather than healthy food.)
they didn't really perform any better than the ones from seed.
I've grown in Ontario and the PNW. Ontario has hot summers and although we could and did grow Scarlet Runner Beans at times, there were many other varieties which grew better and had less of a tendency to grow "tough". Here in the PNW, many of those heat-loving varieties have not produced for me. Even if it's warm during the day, I'm close enough to the Ocean to have it cool off quickly as soon as the sun goes down. Scarlet Runners seem happy in that weather (and the local hummingbirds do adore the red flowers!)
Kevin Wilson wrote:BTW there are multiple N American posts here but all from the PNW / southern BC area where people do grow runners. Elsewhere they tend not to grow them at all.
Kevin Wilson wrote:I've been working on doing this for a few years now... no success yet. I started by collecting every RB variety I could find while on holiday in the UK in 2016, and growing them out the next year and letting them cross with each other. I've grown out the results in 2019 (left them in the ground over winter, none survived) and 2020 (they are in the ground, some with straw bales on top - oops! - will see if they survive and pop up next spring).
However, reading this thread I think I may not bother to continue: Powell River is noticeably colder than Victoria BC and our garden is in a chilly spot even for here. Pity.
BTW there are multiple N American posts here but all from the PNW / southern BC area where people do grow runners. Elsewhere they tend not to grow them at all.