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Tension wood: A 'muscle' that can both bend and straighten plants

phys.org

41–48 of 48 posts

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#42
post #20
post #5

Trees "calculate" which branches to drop based on data they gather as they grow. A competent and experienced arborist knows how to read the tree and simply safely cut off the branches that the tree was already intending to drop so that it doesn't fall on your house or whatever. Inexperienced arborists often ignore this key dendrology fact and may totally butcher your tree. In the process they can create an even large…

>NEVER TOP YOUR TREES Kind of annoying when all the fruit is several meters out of reach

I was about to come in and say - orange groves are ALWAYS topped. I worked at the California Citrus State Historic Park, topping was done frequently. Same thing for most any orange grove from Cali to Florida. In fact, they're basically topped and hedged around explicitly to keep their size, shape, and productivity.

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#43
post #5

Trees "calculate" which branches to drop based on data they gather as they grow. A competent and experienced arborist knows how to read the tree and simply safely cut off the branches that the tree was already intending to drop so that it doesn't fall on your house or whatever. Inexperienced arborists often ignore this key dendrology fact and may totally butcher your tree. In the process they can create an even large…

I have a fun entry to the exception to the topping rule. I have a diseased sycamore that was really struggling. The disease was primarily at the top of the tree. We were going to cut it down to prevent neighboring trees from being infected or the tree from falling. The cutting company had a “hold my beer” style suggestion that topping it would bring the tree back. Boy did it. It’s flourishing with new branches from the cut and beautiful coverage. The fungus hasn’t come back and I’m not worried about it dying and falling on my house. Everyone wins!

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#44
post #6
post #3

Let me take this opportunity to remind HN readers - Posture & Hydration Check!

Or: drink when you feel thirsty and change your position when your back gets tired.

I had a girlfriend who was chronically underhydrated, and for her a drinking regimen was actually useful. (Unfortunately, she learned this after we broke up... Her dehydration actually reduced her sex drive, because: low lubrication.)

I only know one example, however; for most of us drinking enough is pretty easy.

As for the other end: one particularly hot summer at Pennsic (two-week camping event), we had people who went to the emergency room for low salt levels due to drinking too much water without electrolytes. Turns out that it IS what your body craves - just not plants, so much.

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#45
post #25
post #22

Earlier quoted context omitted.

This is often not useful advice, as it is common to acquire responsibility for a tree than has been badly managed. The GP's link actually gives a solution for this case: pruning more accurately over a slightly longer period. More generally, I've found as the maintainer of a building that while mainstream practices (of property generally, not specifically trees) often undershoot good practice, heritage techniques are…

Well I agree it'd be ideal for our society would be organized in such a way that effective semi-artisanal trades are cheaper than practices that do more harm than good. The real advice I should've given was to construct protection for a window or hire a certified arborist to do a proper thinning of the canopy. But I wanted to remain on the topic of interest dendrology info

Fair enough- I did wander rather far from the topic

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#46
post #5

Trees "calculate" which branches to drop based on data they gather as they grow. A competent and experienced arborist knows how to read the tree and simply safely cut off the branches that the tree was already intending to drop so that it doesn't fall on your house or whatever. Inexperienced arborists often ignore this key dendrology fact and may totally butcher your tree. In the process they can create an even large…

Fascinating! Where is this data stored? I love the idea of a Tree DB queried via TreeSQL.

When you look closely, plants are made of many overlapping and highly sophisticated molecular state machines. The particular balance of select signaling molecules in a specific place within the plant triggers different response behaviors.

It's super fascinating to research all the different little mechanisms plants use to drive their growth and development. As an embedded developer, I find molecular biology strangely compelling. It's fun to see the "glue logic" nature evolved to solve all kinds of problems

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#47
post #20
post #5

Trees "calculate" which branches to drop based on data they gather as they grow. A competent and experienced arborist knows how to read the tree and simply safely cut off the branches that the tree was already intending to drop so that it doesn't fall on your house or whatever. Inexperienced arborists often ignore this key dendrology fact and may totally butcher your tree. In the process they can create an even large…

>NEVER TOP YOUR TREES Kind of annoying when all the fruit is several meters out of reach

I wonder if this pertains to crop trees. A lot of crop trees are trained to stay smaller or grow in helpful shapes, such as with espalier training.

Re: Tension wood: A 'muscle' that can both bend and straighten plants

#48
post #5

Trees "calculate" which branches to drop based on data they gather as they grow. A competent and experienced arborist knows how to read the tree and simply safely cut off the branches that the tree was already intending to drop so that it doesn't fall on your house or whatever. Inexperienced arborists often ignore this key dendrology fact and may totally butcher your tree. In the process they can create an even large…

I'm an arborist since 2022 in the UK and yes, never top trees. But... There's three scenarios that come to mind in which it's somewhere between "acceptable" and "totally fine for some reason". One, it's conifer hedge (the types popular in the UK) as these typically respond very well to being topped. It's what makes them a nice tidy hedge. I'm specifically referring to hedges above 3 meters in height. If you ever work…

I suppose if a slow death is the goal then topping is a great strategy.
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