Best Humidifier for Plants of 2022: Complete Reviews With Comparisons

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House plants can enhance your indoor space, improve air quality, and reduce stress, but most of them can’t survive low humidity.

So if you are not blessed with a tropical climate in your area, you need the best humidifier for plants.

This is true, whatever the size of the room your plant is in.

It will never be able to replicate the conditions of a jungle or forest, where the most astonishing plants come from.

Fortunately, many humidifier brands are available, but which one is best for you?

Here is a close look at five of your top options.

Comparison Chart

41mYpERXQQL. SL500
LEVOIT Humidifiers for Large Rooms
Pure Enrichment® MistAire™ Ultrasonic Cool Mist Humidifier
31wffnye3YL. SL500
Crane Ultrasonic Cool Mist Humidifier
41A6d377BcL. SL500
BEAR Humidifier for Large Rooms & Home
4114VoAI+DL. SL500
UmorAiro UH1 Cool Mist Humidifier

Best Humidifier for Plants: A Review

1. Levoit 6L Top Fill Cool Mist Humidifier

41mYpERXQQL. SL500

Levoit is one of three brands owned by VeSync, a company specializing in small home appliances.

They have a wide selection of air purifiers, vacuums, filters, and similar products.

The 6L Top Fill Cool Mist is from its line of bigger humidifiers and one of its mid-tier offerings.

It is designed for large rooms of up to 505 square feet.

Product Highlights

With one look, you will know that the 6L Top Fill Cool Mist Humidifier is a premium product.

It has all the key features plant collectors look for in a reliable humidifier and then some.

Here are its key features you need to make a note of:

  • Powerful Performance

This machine is one of the best humidifiers today, not only in terms of aesthetics but also in performance.

It has been upgraded to deliver up to four times faster humidification speed for up to 60 hours.

That said, it does not make much noise during operation.

You can also use an app to customize the humidity levels for optimum performance.

  • Comprehensive Plant Care Program

If you are a plant collector, you will love the 6L Top Fill Cool Mist Humidifier.

This model goes beyond just meeting basic plant humidification needs.

For instance, it has comprehensive plant care programs and a wealth of professional encyclopedias.

You can also use it to implement a customized plant care program.

  • Top-Fill Design

This humidifier from Levoit has a large opening at the top for convenient refilling and cleaning.

You also do not have to worry about spills when topping it up.

What We Like

The 6L Top Fill Cool Mist Humidifier is packed full of helpful features, but what we like the most is its capacity.

It can easily humidify a big room for more than two days before you need to refill it.

What We Don’t Like

One thing you should consider before buying this humidifier is that it is one of the more expensive models today.

That said, it is a good investment for any avid plant collector.


  • Offers powerful performance
  • Capable of comprehensive plant care
  • Easy to use and clean
  • Ultra-quiet operation


  • More expensive than some brands

2. Pure Enrichment MistAire Ultrasonic Cool Mist Humidifier

Established in 2010, Pure Enrichment is one of the leading brands in the premium home, health, and personal care space.

It has an impressive selection of air treatment, aromatherapy, pain therapy, and other home products.

The MistAire Ultrasonic Cool Mist Humidifier is an entry-level offering, but it is also one of their bestsellers.

It is designed for medium-sized rooms of up to 250 square feet.

Product Highlights

The MistAire Ultrasonic Cool Mist Humidifier is very popular among plant owners, and it is easy to see why.

  • Instant Relief From Dry Air

This humidifier uses ultrasonic cool mist technology that can raise the moisture levels of dry air quickly and safely.

It has both high and low settings, making it an ideal choice not only for indoor plants but nurseries and bedrooms as well.

  • Year-Round Comfort

The MistAire Ultrasonic Cool Mist features a 360-degree mist nozzle that can consistently regulate humidity, whatever the season is.

This feature allows you to recreate the ideal conditions for your indoor plants throughout the year.

  • Easy to Use

This humidifier features a transparent water tank that is easy to fill.

The unit has a compact design and does not take up much space.

Finally, the automatic shut-off feature comes in handy when the water level is low or if you remove the tank.

What We Like

For a compact humidifier, the MistAire Ultrasonic Cool Mist is surprisingly fast.

It can quickly moisturize the air in a medium-sized room for up to 25 hours.

What We Don’t Like

Some users complain that the settings can be a bit tricky to manage.

Also, the nozzle gets stuck sometimes.


  • Regulates humidity levels quickly
  • Provides year-round comfort for plants
  • Easy to use
  • Offers quiet operation


  • Settings are a bit hard to manage
  • The nozzle can get stuck

3. Crane Ultrasonic Cool Mist Humidifier

31wffnye3YL. SL500

Crane started out in 2005 with just a handful of products designed to meet indoor needs.

It has since grown into one of the global leaders in home solutions for inside and outside the house.

The Ultrasonic Cool Mist Humidifier is part of its long line of humidifier products.

It is an entry-level model designed for large rooms of up to 500 square feet.

Product Highlights

If you are looking for a reliable plant humidifier, this product from Crane has you covered.

  • Variable Speed Settings

Most plants thrive in humid conditions, but their needs are not all equal.

That is where the Crane Ultrasonic Cool Mist Humidifier comes in.

It has variable output settings, so you can create the exact conditions you want.

What is more, it comes with a 360-degree lid that can send mist in all directions.

  • Quiet Operation

If you want to keep some plants in your bedroom, you need a humidifier that offers quiet operation.

This machine from Crane fits the bill perfectly. It is an excellent option if you are a light sleeper or have a baby at home.

  • Great Design

The Crane Ultrasonic Cool Mist Humidifier has a one-gallon tank that fits easily under the sink.

It also has a built-in handle at the top for easy transport.

Note that it does not come with a filter, but you can purchase this separately from Crane.

What We Like

The best thing about this humidifier from Crane is its variable speed settings.

It allows you to create the exact conditions you need for your indoor herb garden to thrive.

What We Don’t Like

This humidifier does not include a filter, so you need to buy it separately if you want to use one.

Also, it does not accommodate essential oils.


  • Offers variable speed settings
  • Capable of quiet operation
  • Has a compact design
  • Easy to clean


  • Filter not included
  • Not compatible with essential oils

4. Bear 5L Cool Mist Humidifier

41A6d377BcL. SL500

Little Bear Electric is an online brand specializing in small home appliances and accessories.

Its product portfolio includes air fryers, electric kettles, yogurt makers, and toasters.

The 5L Cool Mist Humidifier is the company’s high-tier offering in the home care department.

It is an excellent option if you want to humidify a medium-sized room of up to 320 square feet.

Product Highlights

The Bear 5L Cool Mist Humidifier is among the best in its class and size. Here’s why:

  • Dual Function

The first thing you need to know about this machine is that it can have two functions.

Not only is it a good humidifier, but it is also a reliable diffuser.

So if you want to relax at home, just load your essential oils into the box at the bottom.

Make sure that you do not add it to the water tank.

  • Easy to Use

Similar to some of today’s top humidifiers, this Bear product comes with a very convenient top-fill design.

It eliminates all the extra steps you must take to refill or clean it.

The inlet is 5.8 inches wide, ensuring that there will be no spills while you are replenishing its water tank.

  • Intuitive Controls

Another thing you would love about this humidifier is its easy control.

It features a step-less control knob that lets you set the exact humidity that your plant needs.

The 360-degree nozzle helps create a consistent condition in every part of the room.

Finally, it automatically shuts down if the water level is low.

What We Like

This humidifier also serves as a diffuser and is one of the many things that make it stand out.

What We Don’t Like

While it is not the most expensive humidifier on the market, it is a bit pricier than some models.

That said, it is one of the bestsellers in its class or price point.


  • Also serves as a diffuser
  • Easy to refill or clean
  • Has intuitive controls


  • A bit expensive

5. UmorAiro UH1 Cool Mist Humidifier

4114VoAI+DL. SL500

UmorAiro is a brand that homeowners know very well. They specialize in various home products, including handheld vacuum cleaners and humidifiers.

The UH1 Cool Mist Humidifier is among their most popular offerings, especially among online shoppers.

It is designed for medium-sized rooms of up to 290 square feet.

Product Highlights

The UH1 Cool Mist Humidifier is a great option for plant owners who want to strike a balance between cost and performance.

  • Quiet Operation

This humidifier is a must-have for plant collectors who are also light sleepers or have babies to care for at home.

It can humidify an entire room without causing any racket.

The UH1 has a Sleep Mode, which turns the indicator light off while running.

  • Dual Function

Aside from being a great humidifier, the UH1 Cool Mist also functions as a diffuser.

With this feature, your plants can get relief from dry air, and you can breathe better at the same time.

All you have to do is add a few drops straight into the water tank and let the sweet-smelling scent fill the room.

  • Long Uptime

This humidifier comes with a 2.5-liter tank, providing up to 28 hours of uninterrupted uptime.

However, note that you should put it on low mist mode to keep it running for this long.

Once the water runs out, the humidifier will automatically shut down.

What We Like

This product is for you if you’re looking for a humidifier that will take care of your plants without disturbing your sleep.

It generates only 23 decibels of sound when on Quiet and Sleep mode.

What We Don’t Like

The UH1 generates less mist when in Sleep mode, which is a problem if you want to maintain a specific humidity level.


  • Runs quietly
  • Works as a diffuser too
  • Offers decent run time for size


  • Low mist when in Sleep mode

Buyer’s Guide

There are plenty of brands and models to choose from if you are shopping around for a plant humidifier.

The problem is that you might find the whole process overwhelming if you can’t narrow down your options.

You need to consider a few things to find the best humidifier for plants, including:

Room Size

First, you have to know the size of the room you are planning to humidify.

You do not want to end up with an expensive humidifier that is not powerful enough for your space.

You should see this in the product description as square feet or square meters.

Type of Humidifier

There are three main types of humidifiers today: warm, evaporative, and ultrasonic.

Warm humidifiers use boiling water and release vapor as warm mist.

Evaporative humidifiers use fans to speed up the evaporation process and generate mist.

Ultrasonic humidifiers rely on high-frequency sound vibrations to generate a fine mist that has a wispy quality.

It is the quietest among the three types and also the most popular.

That said, it is a bit prone to bacterial growth, so if you choose an ultrasonic humidifier, disinfect it regularly.


If you use a humidifier, there is a good chance you will leave it running overnight.

If this is the case for you, you should look for a humidifier that won’t make too much noise and disrupt your sleep.

Your best bet is to get an ultrasonic humidifier, but even they are not all created equal in this regard.

So before you make your purchasing decision, check out how many decibels it emits while running.

Tank Capacity

Aside from the room size, you must also look at the humidifier’s tank capacity.

It determines how much water the unit can hold, which dictates how long it can run uninterrupted. 

Temperature of Mist

Technically, mist temperature has no impact on the growth of your plants.

However, it can affect how much you will be paying when your utility bill comes.

A warm mist means the unit has to boil the water, which consumes more energy.

Cool mist is less pure, but it is more energy-efficient.

Humidity Level

Different plants have different needs when it comes to humidity levels.

So make sure you understand the best conditions for you and make the appropriate choice in terms of a humidifier.

FAQs About Plant Humidifiers

1. How often should I use my humidifier?

You should turn your humidifier on up to four times a week.

In most cases, you do not have to leave it running 24/7.

2. Can I use a diffuser instead of a humidifier?

No, the mist that a diffuser generates is not enough to increase the humidity level of its surrounding.

3. Can molds grow on a humidifier?

Without proper maintenance, molds and bacteria can grow in the water and the filter (if it has one).

You need to clean it regularly, so it does not spread along with the mist.

4. What is the best humidity level for plants?

Most plants thrive at 40% to 60%, but some need around 80% to 90% humidity

5. Which is better for plants, warm or cool mist?

Indoor plants can survive on either one, but cool mist humidifiers are more energy-efficient.

Which Plant Humidifier Should You Choose?

The Levoit Top Fill Cool Mist Humidifier earns our nod as the best plant humidifier for 2022.

It has enough juice to humidify large rooms for up to 60 hours and can provide comprehensive and customizable plant care programs.

The top-fill design makes it easy to refill and clean, which is a plus. All these and other features make this humidifier worth its heftier price tag.

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