What Happens If You Don’T Trim a Bonsai Tree?
Bonsai trees are not like other houseplants; they require special care and attention. If you don’t trim a bonsai tree, it will become overgrown and unmanageable. Untrimmed branches will grow longer and longer, eventually becoming too heavy for the tree to support.
The leaves will also get larger and the tree will lose its compact shape. In extreme cases, an untrimmed bonsai tree can die.
Bonsai tree pruning | Deciding which branches to prune
Bonsai trees are miniature trees that are cultivated to remain small. They are typically trimmed and shaped to create an aesthetically pleasing design. However, if you don’t trim a bonsai tree, it will continue to grow and eventually become overgrown.
An overgrown bonsai tree can lose its shape and look unsightly. Additionally, the branches of an overgrown bonsai tree may become too heavy and cause the tree to topple over. If you don’t want to trim your bonsai tree, be sure to keep it in a pot that is large enough to accommodate its growth.
Bonsai Pruning Rules
Pruning is a critical part of bonsai care. The type of pruning, how much to prune, and when to prune will vary depending on the species of tree and the stage of development. Here are some general guidelines for bonsai pruning:
1. Pruning should be done with sharp, clean tools to avoid damaging the tree.
2. Never remove more than one-third of the foliage from a branch or trunk in a single pruning session.
3. When possible, make cuts at an angle so that water runs off the wound rather than collect on it.
This will help prevent disease.
4. Avoid leaving stubs when removing branches; make sure the cut is clean and flush with the trunk or branch being removed.

Credit: gardenerspath.com
Is It Necessary to Trim a Bonsai Tree?
No, it is not necessary to trim a bonsai tree. However, many people choose to do so in order to shape the tree and promote new growth.
How Often Do Bonsai Trees Need to Be Trimmed?
Bonsai trees need to be trimmed on a regular basis – at least once every couple of weeks. This may seem like a lot, but it’s necessary in order to keep your bonsai tree healthy and looking its best.
When trimming your bonsai tree, you’ll want to remove any dead or dying leaves or branches.
You’ll also want to prune back any new growth that is getting too long or out of control. By doing this regularly, you’ll be able to shape your bonsai tree into the beautiful work of art that it is meant to be!
What Happens If You Let a Bonsai Tree Grow?
Bonsai trees are often kept small through regular pruning, but if you were to let a bonsai tree grow without any shaping, it would eventually become a full-sized tree. The growth rate of a bonsai depends on the species of tree, but generally speaking, it would take several years for a bonsai tree to reach its full height.
If you have an indoor bonsai tree and you want to let it grow to its full size, be prepared for some major re-potting!
As your bonsai grows, it will need progressively larger pots in order to accommodate its root system. You may also need to stake your bonsai tree as it gets taller in order to prevent it from toppling over.
Outdoor bonsai trees can be left to grow without intervention, but they will eventually outgrow their location and need to be transplanted.
If you have the space and patience, letting your outdoor bonsai grow into a majestic tree is a truly rewarding experience.
Conclusion
It’s important to trim your bonsai tree regularly, as it helps promote growth and keeps the tree healthy. If you don’t trim the tree, it can become overgrown and unhealthy. The leaves will become yellow and the branches will be weak.
Eventually, the tree may die. So make sure to trim your bonsai tree every few weeks!