eli5: how do climbing plants “know” where to “reach” places where they can grab onto to grow up a surface? Ex: peas have those little green string “fingers” that they wrap around trellis in a garden.

Question

eli5: how do climbing plants “know” where to “reach” places where they can grab onto to grow up a surface? Ex: peas have those little green string “fingers” that they wrap around trellis in a garden.

In: Biology

Answer 1

They just slowly “wiggle” those arms until they hit something and then these twisting wiggling motions makes it wrap around.

Will edit in a second if I find a timelapse

Edit: [Here](https://m.youtube.com/watch?v=UG9YmrqyomM)

It’s basically like when it’s dark and you’re trying to reach for the lightswitch. Just try until you hit the target.