The Best Humidifier for Plants Survival Discussion In 2021

Having explored botanical gardens around a region or in a tropical area while traveling, I’m perplexed as to how much humidity some plants need to grow well. For these greenies to thrive, you must provide the right amount of moisture they need. The necessary humidity level might not be provided by the sun, environment, and weather; this is why you need to own the best humidifier for plants.

Top recommendation

  • >>Hupro Air Humidifier Top Fill 6L large capacity
  • >>TaoTronics Humidifier for Bedroom
  • >>Everlasting Comfort Cool Mist Humidifier
  • >>Elechomes HTJ-2119 Ultrasonic Humidifier
  • >>Hupro Premium Ultrasonic Cool and Warm Mist Humidifier

Are humidifiers good for plants?

The Best Humidifier for Plants Survival Discussion In 2021

In all seriousness, most humidifiers are made for humans and not plants. However, thorough research and check into their features have helped in getting the appropriate ones for plants. Are humidifiers good for plants? The answer has a condition attached to it. Humidifiers are only good for plants when they provide the right environment for that plant. Note that, plants vary in their need for humidity. So depending on the plants you are growing – humidification needed for each plant type might be higher or lower, as the plants would suggest.

The tropical areas and environment might not need humidifiers for the plant since there is a high level of fresh and humid air in circulation. Desert lands, with dry air, will need as much humid air as needed by the plants. However, in both places and environments, a humidifier for plants is only meant to compliment losses or normalize excesses in humid air that your plants may thrive.

To sum the response to this question up, only use the best humidifier for plants in your gardens because the best will provide the right amount of humidity and recreate the natural environment meant for your plants to grow well.

Qualities of the Best Humidifier for Plants

Here is a list of what you should look out for in a humidifier to deem it fit for plants. Since we have acknowledged that most humidifiers are not so designed for plants but rather humans+, we mustn’t assume all that works well with humans will do the same with plants.

Tank Size

The best humidifier for plants will be that with a reasonably large water tank. Plants will require dispersed mist at a high rate than humans would. And with a higher mist dispersion comes a high level of water consumption. Therefore, go for the humidifier with a large tank size, it will save you the stress of refilling the tank too often when the water runs out.

Run Time

Run time might be a factor dependent on the tank size, however, it is not always so. The best humidifier for your plants should run for at least 12 hours and over 24 hours, especially when on heavy-duty – dispersing high mist and humidity levels. 


The technology from which a humidifier is built is of great importance to its performance and effect on plants. There are three technological paths by which different humidifiers work; warm mist, evaporative, and ultrasonic humidification methods. Note that the wrong humidifier could affect your plants and even lead to their death. How? You might want to ask. Your humidifier is beneficial to your plants, but the body of the humidifier releases heat into the atmosphere and might affect any surrounding object, which in this case is your tender plant.

In choosing the humidifier that is the best fit for your plants, you should go for an evaporative or ultrasonic cool mist humidifier. Furthermore, choose a portable humidifier that can be moved around, conveniently.

Noise Level

If your grow house is not a small and portable one, say you have a greenhouse, the kind of humidifiers you will employ will be gigantic, heavy-duty ones. As good as this sounds, you might be faced with the noise challenge. Some of these humidifiers make use of fans and rotating blades when dispersing moisture, hence they generate noise. Be satisfied with a particular noise level that suits you, your environment, and your plants. The noise level in humidifiers varies.

Reviews Of Best Humidifier For Plants

1. Hupro Air Humidifier Top Fill 6L large capacity

Hupro Air Humidifier Top Fill 6L large capacity

The Hupro air humidifier is a smart and effective one that helps you, correctly, regulate the humidity level in your home, grow room, or in mini indoor gardens. It incorporates both the cool and warm mist setting and features three-speed levels, such as low, medium, and high. You can set the humidity as required by adjusting the humidistat. The water tank is a top-fill 6litres capacity tank, which when empty triggers the auto shut-off feature. You can as well set a duration for the humidifier’s operation because it features a timer that goes off automatically when the time is reached.

This device has a 360degrees rotatable mist nozzle that assists the spreading of mist droplets around the room in all directions. When considering the noise level, Hupro Air Humidifier works under low silent frequency and a whisper-quiet operation is guaranteed.

Maintaining this device is effortless. Refilling its tank too is very easy and so is its cleaning.


  • Easy refill and cleaning
  • Sleep mode and LCD display
  • Auto-humidity control
  • 12-hours timer


  • A huge green light on its power strip is a problem

2. TaoTronics Humidifier for Bedroom

TaoTronics Humidifier for Bedroom

This TaoTronics humidifier is an excellent choice for large spaces up to 700 square feet. The humidifier provides both cool and warm mist with 3-mist levels, sleep mode, auto mode, timer, and three mist temperature settings. You can maneuver all of these options from the comfort of your bed or seat as it features a remote controller.

The humidity level in your grow room can be automatically monitored with the help of the humidistat, which this device offers. By setting the desired humidity, the humidifier will turn off or on when the need arises.

TaoTronics humidifier has an extra-large tank that contains 6litres of water. This tank is a top-fill type, and that makes it easy to refill and clean. As an addition, it features a tray for the diffusion of essential oil. You can infuse your favorite oil and fragrance into the air effortlessly.


  • Easy-to-fill, largewater tank capacity
  • Remote controllable
  • LED display and touch screen
  • Whisper-quiet operation


  • Emitted white dusts especially when hard water is used.

3. Everlasting Comfort Cool Mist Humidifier

Everlasting Comfort Cool Mist Humidifier

This ultrasonic humidifier is a powerful device that gives a super high mist output for rooms up to 500square feet. Its 6litres water tank can run for up to 50hours, long enough to reduce the rate at which you refill the tank. Everlasting comfort cool-mist humidifier employs the vaporizer mechanism of action and therefore, operates very quietly with little or no noise given off.

One turn-off with humidifiers is the attached filter that would require consistent replacement, but that is not the case with this humidifier. It is a filter-free design that saves you the cost of constant filter change. Also, it features an essential oil diffusing tray and an automatic shut-off that prevents your device from damage when out of water.


  • Easy to use, clean and maintain
  • Large water tank and long run time
  • Essential oil tray
  • Filter-less


  • There is no handle for the device and its main upper part is slippery

4. Elechomes HTJ-2119 Ultrasonic Humidifier

Elechomes HTJ-2119 Ultrasonic Humidifier

Your plants will thrive when this humidifier becomes their companion. The Elechomes HTJ2119 is an ultrasonic type of humidifier that has a water tank with 4.5litres capacity, which can go for as long as 38hours with continuous use. It has a large LED digital screen that shows the humidity, temperature, and settings easily and boldly. When you are about to sleep, you can turn on the sleep mode for a quieter and no/low-light operation. From the convenience of your bed, you can adjust the humidifier settings using a remote control. The remote control can work even from 6meters away.

Safety measures I appreciate about this humidifier are not just its automatic shut-off but the feature that allows you to lock the control panel when kids are around. This way, you rest assured that your kids are safe from the risk that comes with accidentally pushing the wrong button.


  • Large LCD display screen
  • Child lock for safety
  • Energy conserving
  • Easy to use, clean and assemble


  • Temperature display is in Celsius, only.

5. Hupro Premium Ultrasonic Cool and Warm Mist Humidifier

The Hupro Premium ultrasonic cool and warm mist humidifier made it to this list of the best humidifier for plants, particularly for being an awesome humidifier with a triple purification system. It is a compact device with a smart humidification system and also oil diffuser.

The top filling water tank of this humidifier can take up to 4litres of water that lasts 30 hours of operation before a refill is needed.

This humidifier is designed for rooms up to 500 square feet. It is leak-proof, easy to clean, and requires little to no maintenance at all. The water tank of this humidifier is detachable with a built-in handle for easy refill and cleaning.

Hupro Premium is an ultra-quiet, remotely controllable, and features a ceramic filter that does not need to be replaced, a sleep mode, 12-hour timer options, a lamp that keeps the water in the tank fresh and without odors, and a box for aroma and essential oil diffusion.


  • Smart humidity control system
  • Ultra fine mist
  • Large tank capacity
  • Remote control


  • The resulting mist gets the table, or surface on which it is, wet when on high level because of it vertical movement.


How often should I use a humidifier for my plants?

A humidifier adds moisture to the air around your plants but you must note that the essence of this humidifier, in the first place, is to ensure that your plants have the right humidity level, which is appropriate for their growth. Too much humidification is bad or improper humidification is also terrible.

The frequency of the use of a humidifier for your plants should be dependent on the plants’ individual and daily needs. A general rule has it that orchids need humidification between 40% and 70%, ferns permit between 40% and 50%, while most other plants desire humidity between 40% and 60%.

One more point that should be noted is that you should humidifier your plants only in the morning to about midday because mist on your plants at night will not evaporate. And excessive water in the soil, environment, and on the surface of the leaves will only encourage disease-vectors to thrive. 

Where is the best humidifier placement for plants?

A good humidifier placement for plants is about three to six feet away from the plant. This principle, however, is subject to and depends on the plants’ needs. But whatever the case may be, when the humidifier is too close to the plant, it will rid it of the moisture it already has and transfers heat from its working system to the plant. On the other hand, when the humidifier is too far, little or no impact is seen on the plant.

Is a cool mist or warm mist humidifier better for plants?

Both cool mist and warm mist humidifier are great for adding moisture to dry air in an enclosed place. But put in mind that cool mist humidifiers use more energy when compared with warm mist humidifiers. Also, the warm mist humidifier works more quietly than the cool mist.

Deciding on which to buy depends on the temperature of your grow room. If the problem is having a grow room that cannot stay warm due to the weather condition, then a warm mist humidifier is what you need. If otherwise, the cold mist humidifier is your sure bet.

Read Also: 5 Best Small Humidifier for Plants Reviews In 2021


The Hupro Air Humidifier for Bedroom Top Fill 6L large capacity would have been an excellent option to pick as the best humidifier for plants if not for its disturbing green light that would disturb your sleep. However, if other factors are to be considered, this humidifier is certainly one of the best you can have for your money. It is particularly fascinating because it incorporates both warm and cool mist type and has a very large water capacity that can run for 6days without a refill.

The TaoTronics humidifier has caught my attention because it has a LED display that shows you all the information you need at a time. And when compared with other humidifiers with similar features and qualities, the price point is a bit lower and reasonable.

It will work, excellently, in a room of up to 500 square feet. Once fully filled with water, it will produce up to 60hours of continuous cool mist. And unlike the Hupro Air Humidifier for Bedrooms, 6L, it features a sleep mode that shuts off all lights so you can enjoy the serenity while sleeping. As it stands, the TaoTronic humidifier is the best humidifier for plants.