Get Bent: Why Trees Have Curves in Them

There's a wicked curve in this tree

A wicked curve molds this tree along the Thames River

Have you ever walked by a tree and wondered to yourself, “Wow, what an unusual tree! I wonder how it got like that?”

There are a few interesting trees on the bike paths along the Thames River in London, Ontario. Some are covered in warty bumps that line their trunks. Others have long bending limbs which swoop at crazy angles. They are odd enough to make you wonder if that is how they are meant to grow. Or if not, what caused them to morph into the head-turning tree they are now?

Trail Trees

Trail trees were created by First Nations people to help mark trails, medicinal plants or other significant sites

In the case of bent trees, there are other trees around the world which exhibit abnormal patterns in growth. In North America, First Nations people used trees to mark significant areas, like trails, river crossings, places to find medicinal plants, and holy grounds where council meetings met. Saplings were chosen and bent to the ground for a period of time. They were held in place with rocks, vines or rawhide until such time as they stayed in place, before being released. The purpose of this was to mark the spot and in a time before GPS, they were effective signposts.

Windswept Pine Tree @ Killbear Provincial Park, Ontario

Windswept Pine Tree @ Killbear Provincial Park, Ontario by Brian Krouskie

The long loops in the trees in Springbank Park aren’t quite as angular as trail trees though, so what else might have caused their bends? Oftentimes trees are affected by the elements. In places where strong winds exist, trees can be seen to lean away from the breeze. With a constant buffet of wind from one direction, trees get permanently affected, resulting in branches leaning to one side. Would there have been enough wind along the Thames to warp some trees, while others grow straight to the sky?

No one knows what caused these pine trees in Poland to get their unusual curves; was it aliens?

Sometimes a tree’s growth pattern can be permanently affected by a storm. A hurricane, tornado, ice storm or even heavy snow might push a tree over or break branches, but not necessarily kill the tree. As the tree recovers, it accommodates its new growth from the point of damage, often bending at the affected area as it begins to grow again.

But sometimes a tree gets a little crooked not because of people or natural disasters, but because it is searching for the best place to grow. It’s called phototropism and it is when a tree grows towards the light. You might notice it in house plants which sit in a bright window and never get turned. Growth is focused towards the light and if the plant is exposed to that circumstance for a period of time, it does its best to grow accordingly. Since light is essential to photosynthesis, which is how a plant gets its nutrients, it makes sense—get as close to a food source as possible. And since trees can’t be plucked from the ground and turned, they do the next best thing and adjust their growth towards their light source.

Do you know of any bent trees? Any guesses on how they got that way?

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CLC Tree Services has been providing premiere tree services to London and the surrounding area since 1988. We focus on providing tree services to residential, commercial, property owners and property management agencies. We have the desire, knowledge and equipment to solve all difficult tree problems.
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4 Responses to Get Bent: Why Trees Have Curves in Them

  1. Nice Blog…good service
    Awesome…

  2. The photo of the trees in Poland — It looks like the ones on the left are all sitting, and the ones on the right are all kneeling. An important tree meeting? 🙂
    I’ve seen many a tree on the beaches in Hawaii, definitely shaped by the wind.
    http://storieswithnobooks.com/2013/08/05/wordless-language/

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