First hot day here....so not working out side tonight much. 100 today.
Think of building branches on a maple or any deciduous tree for that matter like a game of chess. A expert chess player may have five master moves in his head while thinking about your next several moves and those you might make, and those you won't make. All in his head at the same time and never for even a second allowing you to know what he is thinking. You got to do that on a maple too. If you don't out think the tree you'll never build branches in scale with the tree. Building branches is about scale. I've seen maples with ungainly branches that were out of proportion and had terrible internode length. There are some species of maple that do not lend themselves well to bonsai culture and there are some that are very good. Kiyohime is one that is very good for bonsai culture when kept as a larger tree. When kept as shohin they require almost daily pruning like an elm and are difficult to keep in scale because even though their leaves are small, their internodes are large. Really large. Kotohime is the one that I love it is short internode and has small leaves, a joy for shohin.
So back to building a branch. Building the branch right takes years. it is not done in a season or even in two seasons. Branch building takes time and knowing how to use that time can make for an easier process down those long years it takes to do it right. Building branches is all about setting ones self up for success. Why would anyone want to set them selves up for failure?
Rule number one, forget about all the branches on the tree right now. Unless there is something really good going on with one figure on removing them all when the time is right. When is the time right? When the tree grows so hard in the can that growth looks like a big shaggy mess. Shoots about 18 inche long all over. Thats when you start building a tree. You talk above about using some small weak shoots. Why would you want to start a tree with weak shoots? get the tree healthy first. get strong growing shoots that are popping all over the trunk. Thats number one.
Rule number two, one shouldn't even be thinking about branches till they get the trunk where they want it. the tree should have a plan and the plan starts with the trunk and the line. this should all be done in a growing container and not a bonsai container. It need not be done in the ground and anyone that thinks ground growing is the best for maples they are dead wrong. Nothing really good happens in the ground and if it does it takes years in a container to improve it because its so coarse.
Rule number three, know your plant. You have to know exactly what that species does in your climate and soil and watering. You have to know how its going to pop in the spring and what to expect. I can't explain what to do for you because what I do will probably not work where you live, how you water definitely how your fertilize or how much time you spend with your plants. Is this just a hobby to you? do you wish to have a tree in a prestigious exhibit some day? ...or are you just puttering?
So what do I mean by setting up for success.
Well it means having something in the future to cut back to. If one is lucky a plant will bud and pop a shoot on a trunk just where you want it. It happens. Again if your lucky, there will be a node ring about a 1/4 inch from the trunk. The shoot will elongate and the next node will unful leaves and then the next and then the next. That first node ring is the most important part on the shoot. It has to be watched like a hawk. I mean daily for the first week. If one is lucky it will not have leaves. the buds will just sit there. It is the trees mechanism for accidents and your best friend. The latent buds will sit there untill something triggers them to come alive. Wind breaks the branch, a limb fall out of the neighbors tree and breaks the limb. Nature figures that if a limb is knocked off, it may not get broken all the way off. These buds are the saviors. The adventitious buds that will preserve the tree and its ability to make food. We can use those buds to our advantage.
Why is this so.
This is something I have never been able to figure out. It does not happen on all branches and happens more or less it seems at random. If you look at those node rings, the one that will lay in that first 1/4 inch of branch, the leaves never open and the branch will send out the first set of leaves at the next node and then continue out and make a next set of leaves all the while extending the length of the internode while doing it. that first set of leaves may start at about 1/2 inch from that first pair of buds that nevr open and while the shoot lengthens the internodes do as well. They keep lengthening as much a 4 or 5 inches. It is those long internodes that we DO NOT want to cut back to. What we need to do is watch that first not opening set of buds and cut back to them. We have just put the tree into jeopardy mode. A branch is gone, a branch is gone. The tree then sends out two shoots from that pair of buds.
Now this is the important part. Make sure to cut back to the first pair of leaves after bud break. Let the emergency shoot put on two or three (if internodes are small) and then cut back to the first pair. This may happen in all of two weeks. after that let the two pairs of buds that will break on each tip do the same thing. So now in about two inches of extension we have a primary wye and four secondary wyes. No from here you can allow this whole apparatice grow and thicken always manageing the whole thing and making sure it does nt get out of shape with long internodes. you can allow extension up to 1/3 of an inch from the six wyes as long as you keep a node close to each wye. Manage what you need to cut back to always and let stuff beyond that grow. If all this work is done in the first weeks after spring bud break the tree will not even hiccup and grow like a son of a bitch. Thats providing you prepared the tree for the work and its strong....hey we shouldn't be working on weak trees right???
Now if you do this to all the branches on the tree, you can grow very ramified branches when your ready cause you will have something to cut back to and be prepared to do it.
Also, very important, don't let people tell you your maple branches are small and not in scale with the tree. Don't try and grow your branches to half an inch in diameter with out the proper ramification. Smaller branches can stay on the tree longer. there is nothing wrong with having a 1/4 inch first branch on a tree 18 inches tall if its properly ramified and looks great. It just means all the work you did to get it there can be enjoyed for a long time.
Hope that helps.
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