Best Way to Address Collar?

[KingJades]

I bought a young Trident Maple online a few weeks ago, and shortly after unpacking the tree dropped a limb leaving a collar. This was about 3-4 weeks ago. My bonsai tools FINALLY came in (along with cut paste and all). Looking at the collar wound, there is still some green tissue present around the edge of the opening.

Is there anything I can do to address this collar even though the wound has been present and open for a few weeks? Should I do anything? It's pretty prominently located in what I think will be the front of the tree.
I'm not necessarily opposed to the scar because it's a natural thing that happens to trees but I just don't want it getting out of hand.

Thanks to everyone!

 

[iant]

Welcome to the forum!
To answer your question it really depends on what you're planning on doing with that tree. (the short answer is really that it doesn't matter. It will heal just fine. If the trunk is going to be grown out then that spot will be absorbed with the increasing trunk size. If the trunk is going to stay slender and you wanted to try to make that spot as small a bump as possible you could make it more concave with a concave cutter but it's not clear that would do much. Sometimes when you make a concave cut the healing with that ends up being more or the same as if you'd left it.)
If it were my trident I'd put a wire on the trunk and give it some movement and the point where the branch fell off would likely be higher than the point at which I would chop the tree in the future so it wouldn't matter even more what happened at that point. It would be in the compost 3-5 years from now anyway.
Ian
p.s. What are the green rocks in the soil? Are those hard or are they a nutrient thing?

 

[Smoke]

p.s. What are the green rocks in the soil? Are those hard or are they a nutrient thing?

probably shake and feed.....

 

[sorce]

Sorce

 

[Brian Van Fleet]

Here is what I do:
https://nebaribonsai.wordpress.com/2012/05/04/more-spring-cleaning-2/