Questions tagged [trees]
Common classification for perennial plants with woody, elongated stems.
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What is the species of this oak tree?
This ~8-10m tall oak tree is growing alone at the side of a sports reserve in Whittlesea, Melbourne, Australia. According to a neighbour, it was planted around 30 years or so ago.
My family and I ...
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Do trees have epigenetic clocks?
In humans epigenetic clocks have attained phenomenal performance when predicting chronological age.
There are questions about the source of trees used in for electricity generation, with claims that ...
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Insect boreholes in Ontario Eastern White Pine (starting in approx 2010)
The Eastern White Pines in the Bon Echo, Ontario, Canada area have what appear to be insect boreholes in the last 15 years' worth of rings.
What kind of insect makes boreholes like that?
Photo from ...
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Coniferous tree with flat needle pattern
What species of tree is this? Is it a fir?
Site: The edge of a rocky, elevated clearing
Location: Near Sharbot Lake, Ontario, Canada
Mid October, 2025
Flat needle pattern; approx. 1-inch needles, ...
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How do trees drop their leaves?
As the North American autumn sets in, I am intrigued by the falling leaves, and specifically how this is actually done by the tree.
To be very clear: I am looking for a description of the mechanism ...
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Tree identification - Southern Brazil
What tree is this? I'm in the Southern part of Brazil, in the Atlantic Forest.
An important point here is that it lost all its leaves during winter. Now it's spring and they're just coming back. No ...
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Is this a decorative apple tree?
In Hamburg, in front of the Physics faculty (over Planten und Blomen) stands a little tree (about 5 m). The question if one can cook applesauce from the fruits, IF these are decoration apples, is ...
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Stick with hollow, round bulb with holes
I found this wooden stick while walking in a brushy area. I do not have it with me anymore but I have photos attached. The bulb (I don’t really know what to call it) is hollow with holes and a little ...
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Why do trees grow closer together and lower near the tops of moutains?
I hiked up a ~5000 ft mountain in upstate New York. As I ascended, the trees became less tall. That makes sense to me, because of the harsher environmental conditions. I also observed that the trees ...
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weird growth pattern of tree, grafting?
Whats the most likely explanation for following structure
2 Aesculus hippocastanum trees that merge into a third one, I guess its man made but what was the process?
Edit: Just found out about ...
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What are these root-like structures growing in the upper part of a tree?
In the UK, I saw these root-like structures growing from the upper parts of a tree. I thought they might be parasitic but they're part of the tree itself, and join to the trunk as branches.
What are ...
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Is this malus baccata?
Sunday 22 September 2024
Location: Vienna 1190, Austria
This tree (which my app can’t identify) reminds me of an apple tree (I am terrible at tree identification). Its fruit are the size of cherries, ...
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Experiments on the effect of pruning a tree on water uptake and soil drying
Having a street tree close to my property and being concerned at the risk of subsidence, I am trying to understand whether and to what extent pruning of the tree might help to reduce the risk (I ...
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Timing of events in responses of trees to pruning
Original Post
I recently pruned a shrub of all of its leafy branches. A week or so later it started sending out new branches. I am making the assumption that those branches would not have grown ...
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Why do old willows have so many broken limbs?
Willows have a reputation for being very flexible. In a nearby park (PA), where I often walk, there are about 20 willows growing by a stream. Willows over 30' to 40' tall have almost all their major ...
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