@TreeStrategist

A treehouse of knowledge, ideas and perspectives on trees, forests, conservation, arboriculture and urban forestry.

 USA
Joined September 2009
  • Tweets5.5K
  • Following1.9K
  • Followers4.4K
185Media
A selection of Oak buds from Eastern North America Source: Feral Foraging
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Forgotten Woodlands / Coilltean Caillte: an online map of 15,000 Scottish place names that suggest the presence of woodland storymaps.arcgis.com/stories…
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A village in Germany whose houses are built on giant blocks that look like tree stumps
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Online tree misinformation is rampant, folks. If you search on how to measure the age of a tree, you'll get a bunch of answers involving the diameter of the trunk and a "growth factor." That is NOT CORRECT. For the real answer, check out my explainer. nist.gov/how-do-you-measure-…

How Do You Measure the Age of a Tree?

Getting the answer, it turns out, is not trivial. In fact, it has spawned an entire field of science: dendrochronology.

nist.gov
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Learn why caterpillars matter during this #TalkingTrees Pod. The Davey Institute's Adam Baker discusses all things #caterpillars, including their benefit & specific species like the hickory horn devil, bagworm & monarch. 🐛 Listen & subscribe here: bit.ly/3YvZJba
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Jim Searing retweeted
Eric Wiseman@vtarborist9 Aug 2023
Upstate NY tree hunter finds 'Bigfoot,' the world's largest white pine. "The tree makes the story but the forest itself is probably the most significant aspect of it, because it’s 550 acres roughly of old growth white pine,” said Danielson." buff.ly/47n8xUG
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Cross-pollination between two lingering ash parents is looking promising - can see the beginning of seed development. Hoping they make it all the way 🤞
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Over the last two years, I’ve been researching, and writing up, accounts of great trees in Britain and Ireland. I’m very relieved to say that I’ve finally completed this task, and the manuscript is now with the publishers. Find out more 🌳👇🌲 thestreettree.com/2023/03/18…

Great Urban Trees of Britain and Ireland – A Milestone 

Over the last two years, I’ve been researching, and writing up, accounts of great trees in Britain and Ireland. I’m very relieved to say that I’ve finally completed this task, and the manuscript is…

thestreettree.com
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Quick reminder If the heat bothers you, plant a tree.🌱 If the water bothers you, plant a tree.🌳 If you like fruits, plant a tree.🌳 If you like birds, plant a tree.🌲 And if you like life, plant many trees.🌲🌳🌱🌱🌳🌲💚
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To reforest half of the 133 million acres that are ripe for planting, US tree nurseries would need to more than double production, to more than 3 billion seedlings a year. All while facing a crisis of labor, infrastructure and seed supply #SeedSeptember americanforests.org/article/…

Seed shortage: America’s quiet crisis - American Forests

There’s a massive and growing problem in forests across the United States that is not being talked about nearly enough. It’s a crisis of seeds.

americanforests.org
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Emerald ash borer in Oregon. First detection west of the Rockies and devastating news for Oregon ash. #emeraldashborer #EAB #PNW #Oregon content.govdelivery.com/acco…

Oregon dad spots the first emerald ash borers on the West Coast during summer camp pickup in Forest...

content.govdelivery.com
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A giant sinkhole with an ancient forest inside found in China A team of Chinese scientists has discovered a giant new sinkhole with a forest at its bottom. The sinkhole is 630 feet deep, according to the Xinhua news agency.
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The conflict in #Ukraine is having an impact on global food prices. Global food insecurity is rising, and impacts will be felt by the most vulnerable people.
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EAB Univ. webinar "Long-term Impacts and Management of #EAB" presented by Kathleen Knight, Research Ecologist, US Forest Service; 2/3/2022, 11:00 AM ET. Go to: emeraldashborer.info/eabu.ph… for registration & details.
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Our next online Forest Science Seminar on 14 Jan (14.00 – 15.00) will discuss ‘enhancing the resilience of our trees, woodlands & forests: a framework for implementation’. Remember to register by 12 Jan to join us. forestresearch.gov.uk/events… #ForestScienceSeminars
Photograph shows a woodland alongside a lake with a house in the middle distance.

ALT Photograph shows a woodland alongside a lake with a house in the middle distance.

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If Holly (Ilex aquifolium) finds its leaves are being nibbled by deer, it switches genes on to make them spiky when they regrow. So on taller Holly trees, the upper leaves (which are out of reach) have smooth edges, while the lower leaves are prickly 🤙
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No matter where you live you should consider this tree an invasive and stop planting. – at Vermont, USA
Eric Wiseman@vtarborist30 Dec 2021
“The Pennsylvania Department of Agriculture has added the Callery pear, also known as Bradford Pear or its scientific name Pyrus calleryana, to the state's noxious weed list. Noxious weeds cannot legally be sold or cultivated within the state.” northcentralpa.com/news/brad…

Bradford pears, once a popular street tree, added to Pennsylvania's list of noxious weeds

Harrisburg, Pa. – The Pennsylvania Department of Agriculture has added the Callery pear, also known as Bradford Pear or its scientific name Pyrus calleryana, to the state's noxious weed list.

northcentralpa.com
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In defence of snags, the bones of the forest theglobeandmail.com/opinion/…
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Fungi could stop emerald ash borers, says U of MN study: wctrib.com/news/science-and-…
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Spread the word - our newest exhibit needs YOU! We invite digital submissions of images or texts that respond to the question: what stories, images, or ideas do trees inspire for you? buff.ly/3dUkNRX
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