Osakazuki Japanese Maple Bonsai Care

The Osakazuki Japanese maple tree is a gorgeous and easy-to-grow bonsai. Whether you’ve owned a bonsai tree before or chose this species as your first pot-child, we’ll walk you through the dos and don’ts for this delicate plant. 

One of the essential aspects of caring for your bonsai, especially any of the Japanese maple species, is a keen eye. Watering and infections are two of the most important aspects to remember when growing an Osakazuki.

Osakazuki Japanese Maple Bonsai Tree Care Sheet

Here's what you'll find while reading our Osakazuki Japanese Maple bonsai species guide:

Here's what you'll find while reading our Osakazuki Japanese Maple bonsai species guide:






Quick Osakazuki Japanese Maple Bonsai Care Sheet

Through this quick overview, you can refer back to information discussed further in the article without scrolling or reading a lot. Additionally, this table is a handy tool if you’re only looking for a quick reference.

Recommended soil

Akadama mixture



Potting season

Every second year

Shaping and pruning season

During autumn, preferably only every second year.


Full day of sunlight, partial shade.


Organic fertilizer that has a low nitrogen content.

Propagation methods

Seeds, cuttings, air layering. Best done during autumn.

Pests and diseases

Verticillium wilt and aphids.

Osakazuki Japanese Maple Bonsai Tree Care Sheet

How to Care for an Osakazuki Japanese Maple Bonsai

Caring for your Osakazuki Japanese maple is a breeze, though not always a gentle one. Most of the tree’s needs are simple; however, areas such as repotting and pruning require careful attention if you don’t want to harm the bonsai.

Best Soil 

The best soil type available for the Osakazuki is an akadama mixture with added lava rocks and pumice. This selection will retain more moisture and nutrients, slowly feeding them to the roots. However, while keeping moisture, the tree won’t suffer damaged roots due to the soil still draining at a reasonable speed.

Alternatively, regular bonsai soil that drains well is a great option for this tree. 


Water your Osakazuki Japanese maple bonsai tree once every day. During warmer seasons, you may need to water the bonsai on a more regular occurrence. Once you start watering the tree more frequently, it’s important to always check the soil’s moisture. Watering too much will lead to root damage that can severely harm the bonsai.


Repot the Osakazuki every second year, cleaning the pot and pruning roots as you do so. By trimming the tree’s roots every two years, you’ll limit its growth and help it maintain its small stature. Additionally, as the roots tend to fill up a pot, it helps keep the tree healthy and growing.

A thin stick such as a pencil or toothpick will work to untangle the tree’s roots. This step is essential for clean cuts. Avoiding infection on your tree’s roots is a must, especially as this species is prone to infections.

Shaping And Pruning 

Shaping and pruning should be done no more than once every two years. Autumn is the best season once you’re ready to trim the tree. Additionally, be careful when cutting larger branches as this may lead to an infection if a cut paste isn’t used.

Location And Sunlight 

Full sunlight is advised for the Osakazuki Japanese maple; however, this isn’t always possible or ideal. During warmer seasons, the leaves are prone to damage in the afternoon sunlight. We recommend that the tree receive more morning sunlight and afternoon shade where possible.


The best fertilizer for your bonsai is a solid organic option. This selection should be low in nitrogen, as the element will cause your leaves to grow more rapidly and need more frequent pruning. Add in a liquid fertilizer once a week for a stronger effect, only if your tree is already healthy.

Propagation Methods  

Using seeds or cuttings is a great way to propagate a new Osakazuki Japanese maple bonsai. Additionally, air-layering is a viable method for growing the new tree. However, all of these methods work best when begun during autumn.

Pests And Diseases 

Aphids and infections are the most common pests and diseases you’ll encounter while growing this bonsai. Aphids are easily managed with frequent misting and regular insecticide. Keeping a close watch and using fertilizer will help your bonsai survive almost any infection, including verticillium wilt. Ensure you trim away afflicted areas.

Osakazuki Japanese Maple Bonsai Tree Care Sheet

Considerations for Growing an Indoor Osakazuki Japanese Maple 

When growing the Osakazuki indoors, you have very few worries. However, placement and infections are concerns you should stay aware of, even while the tree thrives.


A full day of sun is advised for your Osakazuki Japanese maple bonsai. You’ll need to find a location with a sun-facing window if you want to grow this bonsai tree indoors. Morning sun is preferred, as afternoon sunlight during warmer seasons can cause damage to your tree’s foliage.


Infections are a hassle to deal with, especially verticillium wilt. However, while incurable, you can care for your bonsai and nurture it back to health. Trim away the infected area, ensuring your tools are clean when doing so. Use fertilizer to add extra nourishment to boost the bonsai’s health.

Common Issues When Caring For an Osakazuki Japanese Maple Bonsai 

When growing your Osakazuki Japanese maple, you’re likely to run into a few complications. One of the most common issues is repotting, especially when you neglect repotting your bonsai.


The Osakazuki’s roots grow rapidly, often filling their pot or container within two years. This speed is frightening, as it will affect the nutrients received for your bonsai. Forgetting to report can lead to serious damage to your Osakazuki maple bonsai.

Osakazuki Japanese Maple Bonsai Tree Care Sheet

FAQs about Osakazuki Japanese Maple Bonsai

Here are several frequently asked questions about the Osakazuki Japanese maple and how to care for it. These answers cover how to care for your bonsai, indoor growing, sunlight, and how difficult it is to keep an Osakazuki alive.

Growing an Osakazuki Japanese maple is an easy task. Once you have the bonsai potted and ready, water it each day. You should place the tree in an area that receives plenty of sunlight during the day. With a good solid organic fertilizer, your Osakazuki will continue to grow in good health.

The Japanese maple is a species of tree that you can grow indoors as bonsai. Ensure the tree is kept near a sun-facing window. As temperatures indoors may differ, it’s important to always check the soil’s moisture levels before watering.

Japanese maples, such as the Osakazuki, prefer full sun and partial shade. Any location that receives plenty of sunlight each day is an ideal placement. However, it’s important to note that summer afternoon sunlight can damage the leaves of your Osakazuki Japanese maple.

Bonsai trees are needy, but keeping them alive isn’t hard. If you’re willing to keep an eye on the tree and provide the needed nutrients, caring for your Osakazuki bonsai is a simple task. Do your research before buying a bonsai and ensure it’s time you’re willing to invest.

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A newcomer to the bonsai world, Jarod Stengel aims to share his experiences with others. Having just one plant and plenty of research, the journey ahead is one to remember. He is looking forward to sharing his adventure with our readers as he applies his bonsai knowledge to his articles and real life.


Jarod Stengel


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