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The Impact of Humidity on Plant Growth and How to Regulate it Naturally

Updated: 1 day ago

If you like to have plants around the house, then you know that keeping the humidity at a reasonable level is essential. If there is too much humidity, your plants will rot. If there is too little humidity, they will wither and die. That's why having a humidistat or humidity checker is essential to help you monitor the humidity levels.


In this blog post, I'll discuss what humidity checkers are, why you need one, and what to look for when choosing one. We'll also recommend some of the best humidity checkers on the market.




1. What is a Humidity Checker?

A humidity checker, also known as a hygrometer, is a tool used to measure the moisture level in the air. For indoor gardening, monitoring humidity levels is essential for promoting healthy plant growth. Plants transpire through their leaves and release water vapor into the air, making humidity a vital factor for regulating moisture levels for the plants.


Too much or too little humidity can cause issues such as wilting and browning leaves. Using a hygrometer to monitor humidity levels, gardeners can adjust moisture-adding techniques such as misting or using a pebble tray to ensure optimal plant conditions. Overall, a humidity checker is valuable for any indoor gardener looking to provide optimal plant care.


2. Why Do You Need a Humidity Checker?


Whether you're an indoor plant enthusiast or a green-thumbed gardener, paying attention to the humidity levels in your surroundings is essential. Too much or too little moisture in the air can have disastrous effects on plants - causing wilting, yellowing leaves, or even fungal diseases.


Each plant type has its preferred range of humidity, and environmental factors like temperature and light exposure can also affect these needs. That's where a humidity checker is handy - it allows you to monitor and maintain the perfect plant balance. In addition to promoting their health and well-being, keeping your plants in optimum conditions can result in bigger yields and more beautiful blooms.


3. How to choose the right level of humidity for your plants


Choosing the right humidity level for your plants can be tricky. So, how do you determine the perfect humidity level for a specific plant?


First, take note of where the plant originates from. Plants from tropical regions will likely thrive in higher humidity levels, while desert plants may prefer drier conditions.


Next, observe your plant's reaction to its surroundings. Are the leaves wilting or drooping? This could indicate that it needs more moisture.


Do they appear crispy or discolored? This could mean there is too much moisture in the air. Adjust accordingly, and you'll soon have a happy, healthy plant on your hands.



4. How is humidity measured?

Humidity levels are measured in two ways: absolute and relative. Absolute humidity is the actual amount of moisture in the air, while relative humidity measures how much moisture the air holds compared to its maximum capacity.

What does RH mean?

RH stands for Relative Humidity. As explained, relative humidity is the amount of moisture in the air compared to the amount of moisture the air can hold at a specific temperature. The higher the relative humidity, the more moisture in the air. For example, if the air holds all the moisture it can at a specific temperature, then the relative humidity would be 100%. If there were half as much moisture in the air as it could hold at that temperature, then the relative humidity would be 50%.


Most plants' ideal relative humidity level is between 40% and 60%. This means the air is holding 40-60% of the moisture it could hold at that temperature.


5. What are some ways to increase humidity?



There are a few ways to increase humidity:


  • Place a bowl or tray of water near your plants

  • Use a humidifier

  • Group your plants together

  • Cover your plants with plastic (make sure there are holes for ventilation)

  • Grow tropical plants


Place a bowl or tray of water near your plants.


Placing a bowl or tray of water near your plants helps to increase humidity because as the water evaporates, it adds moisture to the air. T