Thigmo-what?

LAH_5161My pole beans, which got a rather late start, are finally climbing their way up the strings on my bean tower. I’m always impressed that the plants know just what to do. Those reaching tendrils that come into contact with the string immediate start to coil around it, securing themselves to the support. A few plants were still free, waving in the light breeze. I tucked them between the two strands of twine, so they too could wind their way upward.

A few rows over, my pea vines have their tendrils securely wrapped around the netting I put up for them. We all know that pole beans climb and pea tendrils wrap, but I wondered how they knew to do so. After all, most plants don’t have this ability.

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