Pruning a Sekkan Sugi tree is not typically necessary, as these trees have a naturally symmetrical and compact growth habit. However, in certain situations, such as when competing leaders or branches appear, pruning may be needed to maintain the tree’s form and structure.
When pruning a Sekkan Sugi, it is best to do so in autumn, after the growing season has ended. This allows the tree to recover and heal before the onset of winter. Pruning in autumn also helps prevent excessive bleeding of sap, which can occur if the tree is pruned during the active growing season.
To prune a Sekkan Sugi, start by assessing the tree’s overall shape and structure. Look for any branches that are crossing or rubbing against each other, as well as any branches that are growing in undesirable directions. These branches can be removed to improve the tree’s form and prevent future issues.
When removing branches, it is important to make clean cuts just outside the branch collar, which is the swollen area where the branch connects to the trunk. Avoid leaving stubs or cutting too close to the trunk, as this can inhibit proper wound healing and increase the risk of disease or decay.
If competing leaders, or multiple main branches, are present, it is recommended to remove all but the strongest and most central leader. This helps maintain the tree’s upright growth habit and prevents the development of weak or structurally unsound branches. Carefully assess each leader and choose the one that is most vigorous and well-positioned to become the dominant central stem.
When pruning, it is crucial to use sharp and clean pruning tools to minimize damage to the tree. Disinfecting the tools between cuts, especially if pruning diseased branches, can help prevent the spread of pathogens.
Personal Experience: I have pruned Sekkan Sugi trees in my own garden, and I have found that minimal pruning is usually required. However, there have been instances where competing leaders have emerged, leading to an unbalanced growth pattern. In such cases, I have carefully removed the weaker leaders to maintain the tree’s desired form. Pruning in autumn has worked well for me, as the trees have had ample time to recover before the onset of winter.
While pruning is not typically necessary for Sekkan Sugi trees, removing competing leaders and undesirable branches can help maintain their form and structure. Autumn is the ideal time for pruning, and it is important to make clean cuts just outside the branch collar. By following these guidelines, you can ensure the health and aesthetic appeal of your Sekkan Sugi tree.
