Best Humidifier for Indoor Plants

Your indoor plant will flourish when exposed to clean air and high humidity. Watering your plant cannot be effective as exposing your indoor plants to humidified air, especially in the dry season. We’ve reviewed the best humidifier for indoor plants in this post.  

The survival of your indoor plants hinges upon the condition of the ambient air. Therefore, you need to make sure that your plants have access to the best atmospheric condition. You will need a humidifier if your indoor plant is located in a place with low humidity and also exposed to a high level of sunlight.

Getting a humidifier for this purpose might be challenging as most of these products are designed for humans. So, you need to be extra careful not to buy the wrong product. The fact is that some humidifiers come equipped with features that make them suitable for indoor plants. We have selected five top humidifiers based on these features.  

Buying Guide: Best Humidifier for Indoor Plants 

The primary reason for getting a humidifier for your indoor plant is to provide them with a humid environment so they can grow well.  The humidity needs of plant vary; some plants need a moderate level of humidity while the requirements of others are higher. Bear in mind that an extremely high level of moisture is advisable as it is likely to affect the plant negatively.  

An excellent humidifier for the indoor plant should have some essential qualities. You should consider these features before you purchase the product.  Here are the elements to consider before buying a humidifier for indoor plants:

Type of Humidifier 

This is an essential factor that you must pay attention to when looking for the best humidifier for an indoor plant.  Humidifiers come in different kinds, so you need to choose the one that is well suited for plants.

You can look into ultrasonic or evaporative cool mist humidifiers. Furthermore, you must put their portability and mobility into consideration. 

Mobile humidifiers are ideal for indoor plants because they can be moved quickly and placed in a perfect location within your grow room. Also, cool humidifiers are easier to maintain when you compare them with the mist type. 

Size of your Grow Room 

You must not overlook the size of your grow room when aiming at buying a humidifier for an indoor plant. Bear in mind that the larger the size, the higher the capacity of the humidifier that you need.  This means that you should look for a product that will serve your plants’ needs efficiently. And, this depends on the ability of the product to disperse cool mist to the entire area of the room 

For rooms that are above 550 square feet, you should consider a high-capacity humidifier, while you need a medium-sized one for a grow room with area ranging from 350 square feet to 450 square feet.   

Note that the humidifier should have the capacity to keep the humidity level of the room above 60%. This will make the environment conducive for them to thrive. Make sure there is a balance, don’t over humidify a small room and avoid extremely low humidity in an expansive place. 

Capacity of Water Tank

The purpose of getting a humidifier for your indoor plant is to humidify the atmosphere for the plant. Therefore, there is a need for continuous operation.  This means that a humidifier for the indoor plant should be able to disperse mist at a higher rate when compared to the one used by humans. On this note, you should consider a humidifier with a larger water tank. This will prevent you from getting the tank filled too often. 

Level of Noise 

The noise level is a factor that you need to take seriously if your grow room is located close to where your bedroom. However, this factor is of no significance if the room stands alone.  

Humidifiers for indoor plants are noisy because they make use of the plant to disperse moisture across the grow room.  

Best Humidifier for Indoor Plants 

#1. Honeywell HUL520W Mistmate Cool Mist Humidifier

Honeywell HUL520W Mistmate Cool Mist Humidifier

Are you keen on providing a healthy environment for your indoor plant to thrive? If that is the case, then The Honeywell HUL520W is your ideal choice.  It is an affordable cool mist humidifier that comes in white color. It humidifies your grow room silently and efficiently, making your plant to grow well.  

Furthermore, Honeywell humidifier is perfect for personal spaces and small-sized rooms. Apart from its quiet operation, it is easy to use. The humidifiers feature variable output settings and simple controls.

This humidifier will maintain the humidity in your grow room at 40 to 60 percent, which is the optimum humidity level for plants. It can also be used to humidify baby’s room, bedrooms, and offices 

It comes with a large tank opening that enables you to refill it with water without any hassle. It can run continuously for 20 hours. The product automatically shuts off when the water is drained. If you need a compact humidifier that is movable, then you should not overlook the Honeywell HUL520W Cool Mist Humidifier.


#2. Honeywell Easy to Care Cool Mist Humidifier 

Honeywell Easy to Care Cool Mist Humidifier, HCM-710

This is another excellent product from Honeywell. It comes equipped with features that make it a perfect plant humidifier.  The product comes with a two-speed setting that allows you to adjust its sound and moisture level.

 You can easily monitor the level of water in the tank through its illuminated water window.  Apart from that, it can operate continuously for 36hours before you refill.  

An essential feature of this machine is the wicking filter dust.  The function of the wicking filter dust is to get rid of minerals in the water, thereby preventing white dust that is common in places with hard water. The dimensions of this product measure 15.3 x 9.9 x 11 Inches, while it weighs 5.49 pound. If you need an easy-to-use cool mist humidifier for your indoor plant,  you should not overlook this device.  

#3. Pure Guardian H920BL Ultrasonic Cool Mist Humidifier 

Pure Guardian H920BL Ultrasonic Cool Mist Humidifier

The Pure Guardian H920BL Cool Mist humidifier is a top product that works effectively to ensure that your plants thrive.  It is perfect for a grow room of about 210 square feet, and can continuously disperse cool mist for about 10 hours.  

You will be pleased to know that the product is easy to control, and it inhibits the growth of Mildew and Mold the surface of the tank.

Note that this product is ideal for small-sized grow room. Furthermore, it utilizes ultrasonic technology for effective operation.   Some essential features of this humidifier are low water indicator, automatic shut off, single rotating nozzle, optional LED light, among others.   The product’s dimension is 4.7 x 4.7 x 10.8 inches, while its weight measures 1.1 pounds.


#4. ZK Mini Portable Cool Mist Air Humidifier 

JZK Mini Portable Personal Cool Mist Air Humidifier

With the JZK Mini Portable Cool Mist Humidifier, your indoor plant will always look fresh.  It is a versatile humidifier that effectively moistens the air in your grow room. Just place the humidifier in a strategic location, and watch your indoor plant flourish.

The JZK Mini Portable humidifier is light in weight, so you can conveniently move it from one location to another.  Apart from that, it is easy to use; you can power it via a USB or plug it into the conventional wall outlet.

The product comes with an instructional manual, USB cord, wall outlet, replaceable filter.  Also, it is perfect for babies and pregnant women. 

#5. Honeywell HCM-890B Humidifier

Honeywell HCM-890B - Humidifier

Are you looking for a high-performing humidifier that operated quietly? If yes, you don’t have to look any further; the Honeywell HCM-890B is the right product for you.  The humidifier comes in black color, and its dimensions measure 14.4 x 9.2 x 11.3 inches. Furthermore, it weighs 5.85 pounds.

The product is perfect for small and medium-sized grow room. It features an antimicrobial treated filter that ensures the dispersal of clean and safe mist.  The humidifier features a self-regulating evaporative system. Not only that, it has a high and low output setting that enables you to adjust its operation according to your desire.

If you love to grow plants in the winter, you should consider installing this machine in your grow room because it will continually humidify your plant. This will make them grow well. 

If you need a high-quality humidifier that is versatile and easy to use, you should consider the Honeywell HCM-8908. 


Nurturing your indoor plant can be made more comfortable with the use of the best humidifier.  Though humidifiers are primarily designed for humans, some products have features that make them your ideal choice in this regard.  

Make your selection based on the qualities we have enumerated, or you can decide to choose one of our top picks. Whether you are selecting from our top five humidifiers or you are purchasing in the market, you should consider the size of your grow room. Other critical factors to take note are the capacity of the humidifier, the type of your indoor plant, among others. 


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