Japanese Maple replant help

[spartanxpower]

Hello, I have a Japanese Maple in my front yard that appears to be growing either a new trunk, or has sprouted a neighbor right next to it.

The new tree has a much greener trunk, and green leaves that are poking out from inside the established red leaves.

I'd love to replant this somewhere else in the yard, but was nervous to kill the tree or damage the existing one's roots. On the other hand, I don't want it to hamper the original by taking all of its resources.

Any advice on what to do?

I also have a third bush? growing in the back yard (previous owner must have planted it) but it is growing many branches from the same spot in the ground, it looks more like a bush but sprouting the same leaves

 

[Paradox]

Looks like it was grafted and the original roots have sprouted a new branch/trunk (the green leaves).
Its not a separate tree

 

[MrWunderful]

Yeah if you dont cut it, it will probably take over and kill the grafted cultivar.

 

[sorce]

Welcome to Crazy!

Sorce

 

[Shibui]

Both red and green are Japanese maples. It is possible that a seedling has sprouted next to the weeping red one but far more likely a shoot has grown from the roots stock - Weeping maple are almost always grafted onto normal AP seedlings. As already mentioned such a sucker from the root stock will usually grow faster and larger than the weeping part and will shade and compete for resources and eventually the weeper dies.

Dig down to the base of the green stem and see if it has roots. If no roots just cut off as close to the trunk as possible. If there are roots then transplant is possible, even just a tiny white root is often enough to keep it alive while more roots grow after transplant (cut the branches of the transplant to reduce leaves making demand on few roots)
If you want to practice layering you could do that to save the green stem if you really want to keep it but it does not have roots yet.
If there are a few roots attached to the green stem you can transplant with some roots. The red tree will not miss a few small roots. Don't be worried if you have to cut roots to get it out. Most transplants can survive with cut roots provided you reduce the leaf mass ti compensate.

No idea what the other shrub you mention is without some photos so it is hard to advise an ID or what to do with an unknown plant.

 

[spartanxpower]

Appreciate the insight! After digging the mulch out it appears that it was a branch after all. I'll go ahead and cut it off which seems the safest choice.

As for the bush I think I figured that out, I dug down around and it is looks like a cluster of branches coming out of the side if a cut trunk. Maybe the root system is trying to regrow?

More leave started to bloom and now that they're larger they do look like the leaves of a nearby tree. I don't know why the last owner cut one down and not the other (both same distance to house)

 

[Shibui]

It appears the first is indeed a sucker growing from the rootstock of a grafted tree. removing it is best for longer term health of the main tree.

Not sure about the 2nd. Some species grow suckers from the roots so we can get new plants emerging from the roots some distance away from the parent. Cherry and Liquidamber are great at this. Chopping these suckers just results in more stems emerging and it can end up as a losing battle.
Sometimes a tree is planted in the wrong spot. When it grows larger it may block out the sun or the view of give cover to approaching bears, muggers, etc (there are hundreds of reasons why someone would chop down one tree and leave another). if the shopped tree is one of those that regrow from the stump or the roots it can be an ongoing battle to stop the regrowth. Each time you cut them more grow back like the hydra of mythology. Liquiamber, Chinese elm, wisteria, apples are all trees that can perform this unwelcome trick. A lot of those species are also able to produce roots from the new shoots which can then be detached and grown separately. The really straight stems on the one in your photo don't look overly promising for bonsai though.