How to care for a bonsai tree

Bonsai trees can help to bring a wonderfully calming aesthetic to your home. In fact, they've been used to aid mindfulness and lower stress for thousands of years. But they do require a fair bit of maintenance to keep them healthy. With all the advice and information out there, it's easy to get overwhelmed before you even begin. Here are some top tips and tricks for bonsai tree care. We'll give you the practical guidance you need to keep your tree looking its best, and your home feeling serene. You'll soon see that caring for a bonsai tree is a rewarding process, and we're here to support you every step of the way.

Bonsai trees require careful positioning in a spot with plenty of natural sunlight, away from direct heat or cold draughts.
Watering is a daily check rather than a strict routine, so pour water until it drains out whenever the topsoil feels dry.
Pruning is essential, with maintenance pruning encouraging new growth and structural pruning helping to shape the tree while it is dormant.

What is a bonsai tree?

A bonsai tree is a small house plant designed to mimic the shape and structure of a fully matured tree. It's not just a dwarfed version of a standard tree; It's a plant that is meticulously pruned to maintain its small size and achieve the classic bonsai aesthetic and has been planted in a small pot to carefully restrict its root growth.

The word 'bonsai' literally means 'tray planting' in Japanese. The art has been practised for centuries across Eastern Asia, with similar arts existing in countries such as Korea, China, and Vietnam. And it has now become a highly popular practice in the west. Knowing what a Bonsai tree is helps you understand exactly what the plant needs to survive and thrive on your shelves or windowsills.

How to care for a bonsai tree

For a plant developed to bring calm to the home, bonsai trees are some of the trickier house plants to look after. You'll need to keep a close eye on your tree fairly often and you'll also need to learn how to tell when it needs pruning and watering, but this hands-on routine is part of the reason they're so popular.

Spending time cultivating and looking after an indoor bonsai tree has been shown to boost your wellbeing and relieve stress. Proper positioning that considers sunlight and humidity, daily watering checks, and seasonal pruning are all vital to growing a beautiful tree. Let's break down exactly how to care for a bonsai tree so you can confidently tackle the job.

Do bonsai trees need sunlight?

There are two main factors to consider when deciding on the position of your bonsai tree: lighting and humidity.

Ideally, you need to find a bright spot with plenty of natural sunlight to keep the leaves vibrant, but you should keep the plant away from any direct heat sources, like a hot radiator, or cold draughts from an open window. Maintaining a steady temperature helps the tree stay healthy.

It's also a good idea to rotate your pot slightly every few weeks so that all sides of the plant receive an even amount of sunlight.

How to water a bonsai tree

Watering your bonsai tree is a tricky balance. A strict watering routine won't work because temperatures and light levels change throughout the year. Instead, you'll need to keep a close eye on your tree daily, watering it as and when needed.

The best way to figure out how often to water a bonsai tree is by looking at the soil. If the top of the soil appears dry, it's time to water. The shallow soil makes it easy for a bonsai to dry out quickly, so it may even need watering daily in the summer.

Keep pouring until the water starts to drain out of the holes at the bottom of the pot. Be careful not to overwater, too. If you end up drowning the roots in water, you'll deprive the plant of oxygen. This leads to yellow leaves and shrivelled branches.

How to prune a bonsai tree

Pruning is key for all types of bonsai trees, with maintenance pruning and structural pruning both being important for good bonsai tree care. There are certain techniques for pruning bonsai branches:

Maintenance bonsai tree pruning is essential for encouraging new healthy growth. Using garden shears, cutting away younger leaves provides more sun exposure to the leaves underneath, making for a stronger and healthier tree. It's best to do this in the spring if the tree is flowering. Knowing how to trim a bonsai tree can also help to perfect the shape of your plant, as pruning the outer branches encourages the growth of smaller internal branches.

When the tree is dormant in the winter, it's time to carry out some structural bonsai tree pruning. More advanced structural pruning involves removing the tree's larger structural branches and should generally be done by a professional.

A less invasive pruning technique is to wire the branches. This lets you gently control their growth to achieve the exact shape you want over time. Take your time with this step, as bending the branches too quickly can cause them to snap.

What's the best soil for my bonsai tree?

Bonsai trees are more likely to thrive when you give them the food they need. Soil with larger particles mixed in will help to offer proper drainage to your indoor bonsai tree. Just add small rocks and stones to introduce more air into the mixture. You'll also want it to retain as much water as possible, and introducing a little clay into the mix can do this perfectly.

For your bonsai to receive all the proper nutrients, it may need some plant fertiliser. Before you add the fertiliser, you'll need to make sure the tree is properly watered as fertilising dry soil can be very harmful to the roots. Always read the packaging on your chosen feed so you know how much to apply.

How to repot a bonsai tree

Soil, fertilising, and repotting are all important if you want to make your bonsai tree last. Make sure to use well-draining, nutrient-rich soil. You will only need to repot your bonsai once every two to five years.

When the time does come, learning how to repot a bonsai tree is simple if you follow a few important steps:

First, carefully remove the tree from its pot.
Next, trim away the outer roots and any signs of rot to help restrict its size.
Clean the pot out thoroughly.
Layer fresh soil on the bottom and place the tree on top, gently filling in the remaining gaps.
Press the soil down lightly so the tree is secure.

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How to grow a bonsai tree

Growing a bonsai tree from the seed is no quick task. People often ask, how long do bonsai trees take to grow? It can take at least five years to get anything that even resembles a miniature tree, and different species can take different amounts of time to establish their trunks.

If you don't have the patience for that, you can simply buy a pre-grown tree from a local nursery. This means you won't get quite as much control over its initial shape, but you can still prune it to suit your space and style as it continues to grow.

If creating a calm and serene space in your home is the goal, a bonsai tree can be a great first step. It's not a fuss-free plant, but cultivating and nurturing it can be a very rewarding process. For more tips on how to make your interior feel more relaxing, explore our interactive Paint Visualiser to find out which colours can help to calm the soul.

FAQs

If you take bonsai tree care seriously, your plant can thrive for a very long time. Many types of bonsai trees will easily live for decades with the right balance of water, sunlight, and pruning. Some well-cared-for varieties can even last for up to 100 years.

If your tree starts dropping leaves or looking unhealthy, check the soil moisture first. You might be overwatering or underwatering the plant. Adjust your watering habits so the topsoil is moist but not soaking wet. Ensure it’s getting enough indirect sunlight and keep it away from cold draughts.

Some types of bonsai trees can be toxic to cats and dogs if they eat the leaves or bark. Popular varieties like the Sago Palm, Azalea, and Jade are known to be harmful to pets. It's always best to check your specific tree species and keep the plant well out of reach of your animals to be safe.

If your leaves are turning brown or yellow and the branches are shrivelling, it's likely because the tree has been overwatered. Drowning the roots deprives your plant of the oxygen it needs to thrive. To keep your bonsai healthy, we recommend checking the topsoil daily rather than sticking to a strict watering routine. Just pour water until it drains out of the bottom holes whenever the top of the soil appears dry.

Yes, they certainly can. A bonsai tree is a small house plant, which means it’s perfectly suited to living inside your home.

To keep your tree healthy indoors throughout the year, you'll need to find the right spot for it. Make sure it gets plenty of sunlight, but keep it away from direct heat sources or cold draughts. As the seasons change, you'll also need to keep up with its care routine. This means checking the top of the soil daily to see if it needs watering, and carrying out structural pruning when the tree is dormant.