Dec 25, 2025

How do I check the humidity level around my calathea plant?

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As a Calathea plant supplier, I know how crucial it is to maintain the right humidity level for these beautiful foliage plants. Calatheas are native to the tropical regions of South and Central America, where they thrive in high - humidity environments. In this blog, I'll share some practical ways to check the humidity level around your Calathea plant.

Why Humidity Matters for Calathea Plants

Before we get into the checking methods, let's quickly understand why humidity is so important for Calatheas. These plants have large, delicate leaves. In low - humidity conditions, the leaves can start to curl, turn brown at the edges, or develop crispy patches. High humidity helps keep their leaves lush and healthy, allowing them to carry out photosynthesis effectively.

Using a Hygrometer

The most straightforward way to check the humidity around your Calathea is by using a hygrometer. A hygrometer is a simple device that measures the amount of moisture in the air. You can find them in various forms, from basic analog models to high - tech digital ones.

Analog Hygrometers: These are the traditional type, often looking like a small clock. They're relatively inexpensive and easy to use. Just place the hygrometer near your Calathea plant, and within a short time, it'll give you a reading of the humidity level. The only drawback is that they might not be as accurate as digital ones.

Digital Hygrometers: Digital hygrometers are more precise. They usually come with a large, easy - to - read display and can give you real - time humidity readings. Some even have additional features like temperature readings and memory functions to track humidity changes over time. You can place them on a table near the plant or hang them on the wall.

The "Breath Test"

If you don't have a hygrometer handy, you can use a simple DIY method, which I like to call the "breath test." Here's how it works:

Take a clear plastic bag and place it over your Calathea plant. Make sure it's not touching the leaves directly but creating a small tent around the plant. Seal the bag as best as you can. After about 30 minutes, check inside the bag.

If there's a lot of condensation on the inside of the bag, it means the humidity around the plant is relatively high. If there's only a little or no condensation, the humidity is likely low. This method is not as accurate as using a hygrometer, but it can give you a rough idea of the humidity situation.

Observing the Plant

Your Calathea plant can also be a good indicator of the humidity level. Here are some signs to look out for:

Leaf Curling: If the leaves of your Calathea start to curl, it's often a sign that the air is too dry. The plant is trying to reduce the surface area of its leaves to prevent water loss.

Brown Edges: Brown, crispy edges on the leaves are another tell - tale sign of low humidity. The lack of moisture in the air causes the leaf tips to dry out.

Droopy Leaves: While droopy leaves can also be a sign of over - watering, in combination with other dry - air symptoms, it could indicate low humidity.

On the other hand, if the leaves look healthy, vibrant, and have a nice sheen, it's a good sign that the humidity is at an appropriate level.

Maintaining the Right Humidity

Once you've checked the humidity level around your Calathea, you might need to adjust it if it's not within the ideal range (Calatheas generally prefer humidity levels between 60% - 80%).

Misting: One of the simplest ways to increase humidity is by misting the leaves of your Calathea regularly. Use a fine - mist spray bottle and spray the water in the air around the plant, not directly on the leaves. This creates a micro - climate of higher humidity around the plant.

pin stripe calatheacalathea ornata sanderiana

Humidifiers: A humidifier is a more effective long - term solution. You can place a small humidifier near your Calathea to maintain a consistent humidity level. There are different types of humidifiers available, such as ultrasonic and evaporative humidifiers.

Pebble Trays: Fill a tray with pebbles and add water until it reaches just below the top of the pebbles. Place your Calathea pot on top of the pebbles. As the water evaporates, it increases the humidity around the plant.

The Calathea Ornata Plant

If you're interested in a specific type of Calathea, check out the Calathea Ornata Plant. It's known for its beautiful striped leaves and is a popular choice among plant enthusiasts. Just like other Calatheas, it requires proper humidity control to thrive.

Contact for Purchase and Consultation

If you're looking to buy Calathea plants or need more advice on their care, don't hesitate to reach out. We're here to help you create the perfect environment for your Calathea plants. Whether you're a beginner or an experienced plant parent, we can offer the right plants and guidance to ensure your Calatheas grow healthy and strong.

References

  • "The Complete Guide to Houseplants" by a well - known horticulturist.
  • Various research papers on tropical plant care from botanical institutions.
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