For starters, this is NOT fake news.
Finding how/where this "phenomena" originated did not go well as any search with a variety of verbiage keeps turning up 'sweaters with trees on them' for hits; and a very small number of hits re towns that have them.
As far as I could research, this has occurred in Seattle & NYC. Both since the hits turned out so inexplicably terrible, and since these are obviously home made, I could not find just who is making them in either locale, to include whether this is the work of a one man band, etc., as well as possibly a sponsor.
Don't bother to look on Amazon, as they don't appear to be for sale there.
Even more amazing, I did not find any hits with articles re vandalization.
At least one pix had a blackboard type sign asking folks to curb their dogs--lots of luck with that.
The impact of weather on these creations: based mostly on guesswork due to the hits issues, it appears they are up 24/7, and so not taken down during inclement weather.
This pix is from Seattle.
Addendum from uTube "23 tree sweaters make up a new public art display in downtown Bloomington, Indiana. Yarns Unlimited teamed up with Middle Way House on the "Knitting to Heal" project to raise funds for Domestic Violence Victim Services".
There's just a couple of hits that I could find on uTube, one going back to 2011.
Anyone with knitting experience care to offer up an educated guess as to how they get mounted on the trunk.
They must be a bugger to knit!
Yarn bombing is a well known phenomenon here.
So calling it 'yarn bombing' is the Secret Word to getting hits, although that phrase did not appear in the article that I came across.
I took this one in Saltburn a few years ago.
I hope someone talked that Teddy down. That water looks almost thick enough to eat. He would have ended up with some nice bruises if he did jump.
Anyone ever wear a knitted swim suit?
Sewn up basically.
Oi funk az much.