How to Care for Your Bonsai?

Caring for a bonsai means providing the ideal conditions for it to grow healthily while maintaining its miniature shape. It's not difficult, but it does require attention, regular care, and above all, observation.

The right placement is key. Some bonsai trees thrive indoors, as long as they receive enough light without direct sunlight and are kept away from drafts or heat sources like radiators. Others prefer to be outdoors, especially in spring and summer, as long as temperatures don't drop below 15°C (59°F). Outdoors, protect the bonsai from strong winds and frost, especially in winter. It's also important to gradually acclimate it to new environments.

Watering is perhaps the most delicate aspect. Too much water will rot the roots; too little, and the tree dries out. The rule is simple: water only when the surface of the soil is dry. Use rainwater or low-lime water if possible. You can also immerse the bonsai pot in a tray of water and wait until bubbles stop rising. Then, allow the water to drain well to prevent stagnation.

Since bonsai trees grow in limited soil, nutrients are depleted quickly. Regular fertilizing is essential, especially from March to October—once every one to two weeks. Stop fertilizing in winter, as the tree typically enters dormancy. A balanced fertilizer, used moderately, keeps the foliage compact and promotes healthy growth.

Repotting is done every two to three years, in spring. If water struggles to penetrate the soil or roots are pushing out of the pot, it’s time for new substrate. Use this opportunity to trim the roots slightly and refresh the soil mix. The substrate should be light, well-draining, and suitable for the specific bonsai species. A good mix prevents waterlogging and ensures good aeration.

Pruning maintains the bonsai’s shape and aesthetics. It should be done during the growing season by removing crossing branches, balancing the overall form, and pinching new shoots. For conifers, carefully shorten new growth. Pruning not only keeps the desired shape but also encourages branching and denser foliage.

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What Your Noble Can Do:

The Noble unit automates and simplifies bonsai care:

• Humidity monitoring via an integrated sensor, with alerts when the soil becomes too dry.

• Configurable automatic watering: water amount, frequency, time of day—everything adjustable via the iOS app.

• Remote control via Wi-Fi, so you can check on your bonsai from anywhere.

• Customizable decorative LEDs to showcase your tree and create a unique ambiance.

• Intuitive interface, with an app that guides you step by step, especially during setup or when switching plants.

Noble takes care of the essentials, so you can fully enjoy the art of bonsai.

by Noble Bonsai

Noble's watering and humidity monitoring system

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FAQ

When should I water a bonsai?

When the surface of the soil is dry. Never let the soil dry out completely, but avoid standing water.

My bonsai is losing leaves—what should I do?

Check the lighting, watering, and location. Stress or sudden changes can cause temporary leaf drop.

Should I trim the roots?

Yes, during each repotting. It allows you to refresh the substrate and maintain a compact root system suitable for the pot.