There's no definition for shrub, either, so when you try to decide whether something's a tree or a shrub, your judgement is just as good as anyone's else. Wikipedia says small trees are classified as shrubs, but that the "minimum height" of a tree is anywhere from 0.5 to 10 m (1.6 to 32.8 ft) so really it's anyone's guess.
Fall foliage could be the best in years, according to Virginia Tech tree expert on WDBJ Your Hometown Station.
If you want to support trees, plant them, care for them, and call the occasional tree doctor for them. Fund local nature programs and parks. Support controlled burns. Thank you.
I'm a big fan of The Secret Life of Trees, a great book for learning how trees communicate with each other.
All the tree pictures on this site were sourced from Unsplash.com.
All of the following tree facts are from Precision Landscape and Tree.
Trees are the longest living organisms on Earth, and never die of old age
Just like humans, trees need water to survive--and they drink a lot of it. In a single day, a large tree can consume 100 gallons of water out of the ground and discharge it into the air as oxygen and water vapor.
Trees are able to communicate and defend themselves against attacking insects.
Pine cones have genders. Male pine cones shed pollen and female pine cones make seeds.
A tree can absorb as much as 48 pounds of carbon dioxide each year and can sequester 1 ton of carbon dioxide by the time it reaches 40 years old.
Trees lower air temperature by evaporating water in their leaves.
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