Pruning Prunus maackii, also known as Manchurian cherry or Amur chokecherry, is essential to maintain the health and aesthetics of the tree. Here are some detailed instructions on how to prune this tree effectively:
1. Timing: Pruning should be done after flowering, once the petals have dropped, but before new shoot growth appears. This usually occurs in late spring or early summer. Pruning at this time allows the tree to recover quickly and minimizes the risk of disease or pest infestation.
2. Tools: Make sure you have the right tools for pruning, including sharp bypass pruners or loppers for smaller branches and a pruning saw for thicker branches. Ensure that your tools are clean and well-maintained to prevent the spread of diseases.
3. Remove dead and damaged branches: Start by inspecting the tree for any dead, diseased, or damaged branches. These should be cut back to healthy wood, making clean cuts just outside the branch collar (the swollen area where the branch joins the trunk).
4. Thinning cuts: Pruning can also involve thinning cuts, which help improve air circulation and reduce the risk of disease. Identify any crossing or rubbing branches and remove one of them to prevent future damage. Additionally, remove any branches that are growing inward towards the center of the tree.
5. Maintain a natural shape: Prunus maackii tends to have an attractive, natural shape. Avoid excessive pruning that may disrupt this form. Instead, focus on shaping the tree by selectively removing unwanted branches or those that are growing in awkward directions.
6. Prune for size control: If you need to control the size of the tree, you can selectively remove some of the longer branches to reduce overall height or width. However, be cautious not to remove more than a third of the tree’s canopy in a single pruning session, as it may stress the tree.
7. Consider rejuvenation pruning: If your Prunus maackii is overgrown or has become unruly, rejuvenation pruning can be done. This involves cutting the tree back to about one-third of its original size, which encourages vigorous new growth. However, this method should only be used on healthy and well-established trees.
8. Clean up properly: After pruning, remove all the cut branches and debris from around the tree. Proper cleanup reduces the risk of disease transmission and maintains the overall aesthetics of your garden.
Remember, pruning is an ongoing process, and as your Prunus maackii tree matures, you may only need to perform maintenance pruning to remove any damaged or unwanted branches every two to three years. Regular monitoring and care will ensure the continued health and beauty of your tree.
