I was working on my new book, Plant Science for Gardeners (to be released spring 2022), and came across a claim that most beans twine anti-clockwise, but that runner beans (Phaseolus coccineus) twine clockwise. This claim was on a government extension site, so it just might be true. It seemed really odd to me, but why would someone make this up? Surely this is something that is easy to check?
I have been growing runner beans for many years but I decided not to plant any this year so I couldn’t even check my garden.
There are also claims that plants, including beans, twine differently in the Southern and Northern Hemisphere. The idea that water drains in a different direction in the south is a myth, so what about twining vines?