How do you hang on the trunk of a tree?

This link tells you how to do it:

https://blog.davey.com/2019/05/do-nails-screws-or-staples-hurt-trees/

Remember that over time the tree will grow around whatever you put in. if you think it is something you will want to remove later, make sure you account for tree growth.

Here is a link that might help you:

https://findanyanswer.com/do-screws-damage-trees

Hi Janice, you can do this without hurting the tree, but it will grow around what ever you attach. If you are mounting a sign or fairy door, etc. you will be arlight

HOW TO DRILL INTO A TREE OR HAMMER A NAIL WITHOUT HURTING IT

https://blog.davey.com/2019/05/do-nails-screws-or-staples-hurt-trees/

Here's a post that might help https://homeguides.sfgate.com/attach-planter-tree-22046.html

Hello. Here’s a link that could be very helpful.

https://web.extension.illinois.edu/askextension/thisQuestion.cfm?ThreadID=16786&catID=194&AskSiteID=87

It shouldn't cause any damage to the tree. As long as you don't remove the surrounding bark. Remember that it will grow over whatever you put there. Once, my son laid a chain around a tree trunk in the woods. About 10 years later it was leaning and we hired it cut down. The only evidence of the chain was that it appeared a chain was growing out of the trunk. The length around the trunk was completely grown over.

nope!