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8 Best Humidifiers for Plants in 2022: Reviews & Top Picks

person holding a white humidifier

person holding a white humidifier

Many plants hate low humidity, but thankfully, we have humidifiers to remedy the problem and keep your plants lush year-round. There are a million humidifiers on the market, so how do you begin to pick the right one for your plants? In this article, we’ve reviewed the very best plant humidifiers so you can make a more informed buying decision. Let’s dive in!

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A Quick Comparison of Our Favorites of 2022

Rating Image Product Details
Best Overall
Winner
Pure Enrichment MistAire Pure Enrichment MistAire
  • 360-degree rotating mist nozzle
  • Long runtime
  • Multiple humidity settings
  • Best Value
    Second place
    Honeywell MistMate Cool Mist Humidifier Honeywell MistMate Cool Mist Humidifier
  • Compact design
  • Adjustable dial
  • Portable
  • Premium Choice
    Third place
    Vick’s Warm Mist Humidifier Vick’s Warm Mist Humidifier
  • Inhibits bacterial growth with warm mist technology
  • Powerful dispersal
  • Long runtime
  • Everlasting Comfort Cool Mist Humidifier Everlasting Comfort Cool Mist Humidifier
  • Huge capacity
  • Long runtime
  • Provides excellent coverage for large grow rooms or small greenhouses
  • Hupro Cool Mist Ultrasonic Humidifier Hupro Cool Mist Ultrasonic Humidifier
  • Control panel with 6 settings
  • Remote control for convenience
  • Dispenses both cool and warm mist
  • The 8 Best Plant Humidifiers Are:

    1. Pure Enrichment MistAire – Best Overall

    Pure Enrichment® MistAire™ Ultrasonic Cool Mist Humidifier

    Type: Ultrasonic
    Tank capacity: 1.5 liters
    Runtime: 16 hours

    With a 360-degree rotating mist nozzle, non-slip design, and two useful settings, the Pure Enrichment MistAire ranks as our best overall plant humidifier. The highest setting puts out 150 milliliters of mist per hour for up to 16 hours, and the lower setting goes for even longer for small growing areas. The bottom-fill design is mitigated by an easy-to-hold flared body that minimizes sloshing and drops. The only real downside to this product is that the tank opening is rather small, which can make cleaning difficult, but it does come with a cleaning brush to remedy that.

    Pros
    • 360-degree rotating mist nozzle
    • Long runtime
    • Multiple humidity settings
    • Ergonomic design
    Cons
    • Small tank opening makes cleaning tricky

    2. Honeywell MistMate Cool Mist Humidifier – Best Value

    Honeywell HUL520B Mistmate Cool Mist Humidifier

    Type: Ultrasonic
    Tank capacity: 1.9 liters
    Runtime: 20 hours

    The plant humidifier that’s best for the money is definitely the Honeywell MistMate. The adjustable dial lets you zero in on the perfect humidity level for your plants, although it has a relatively short range. With the lowest setting you can get about 20 hours out of a single tank, though the highest setting drains it in half that time. With an easy grab handle and a compact size, this humidifier is perfect for small grow rooms.

    Pros
    • Compact design
    • Adjustable dial
    • Portable
    Cons
    • Short effective range
    • No filter

    3. Vick’s Warm Mist Humidifier – Premium Choice

    Vicks Warm Mist Humidifier

    Type: Warm mist
    Tank capacity: 3.78 liters
    Runtime: 24 hours

    Providing 24 hours of warm mist, the Vick’s Warm Mist Humidifier is perfect for indoor tropical plants. Be sure to adjust the humidity lower in small rooms, because it’s so powerful it will leave their walls dripping. By heating the water before dispersal, this humidifier eliminates the majority of bacteria that can proliferate in cool mist humidifiers. The main caveat is that it has no filter, so unfiltered tap water could leave thin white residue on nearby surfaces.

    Pros
    • Inhibits bacterial growth with warm mist technology
    • Powerful dispersal
    • Long runtime
    Cons
    • Requires regular cleaning
    • Unfiltered water can leave a residue

    4. Everlasting Comfort Cool Mist Humidifier

    LEVOIT Humidifiers for Bedroom Large Room

    Type: Ultrasonic
    Tank capacity: 6 liters
    Runtime: 50 hours

    It’s hard to humidify large rooms, but the Everlasting Comfort Cool Mist Humidifier is perfect for it, with a huge 6L capacity and crazy long 50-hour runtime. At its highest setting, it can humidify up to 500 square feet with 270mL of vapor per hour. The nozzle sprays two streams and is fully rotatable to boot. The only real complaint we have is that the tank is opaque, making it hard to check the water level.

    Pros
    • Huge capacity
    • Long runtime
    • Provides excellent coverage for large grow rooms or small greenhouses
    Cons
    • Opaque plastic makes it hard to track the water level

    5. Hupro Cool Mist Ultrasonic Humidifier

    Humidifier for Bedroom 5.8L

    Type: Ultrasonic
    Tank capacity: 6 liters
    Runtime: 40 hours

    Most humidifiers are rather plain, but Hupro steps it up with a sleek and modern control panel. You can adjust the timer, humidity level, warm/cool mist, and humidity level from the panel or the included remote. Being able to switch from cool to warm mist lets you use it for various types of plants, plus the large capacity and long runtime keep the area humid for longer. Best of all, it has a top-fill tank instead of a messy, drippy bottom-feed tank.

    Pros
    • Control panel with 6 settings
    • Remote control for convenience
    • Dispenses both cool and warm mist
    • Top-feed tank
    Cons
    • Expensive

    6. Raydrop Cool Mist Humidifier

    raydrop Cool Mist Humidifier Diffuser

    Type: Ultrasonic
    Tank capacity: 2.5 liters
    Runtime: 30 hours

    If you just need something cheap and functional, this offering from Raydrop is a great choice. It can run for 12 hours on its high setting, or up to 30 hours on the lowest setting. The tank capacity is rather respectable for the price, and it’s top feeding for convenience and cleanliness. As a bonus, you can use it to diffuse essential oils, too. However, the lid is a bit loose according to customer reports.

    Pros
    • Top-feed tank
    • Affordable
    • Compatible with essential oils
    Cons
    • Loose lid can get knocked loose or open easily

    7. Magitec Cool Mist Humidifier

    Cool Mist Humidifier

    Type: Ultrasonic
    Tank capacity: 2.5 liters
    Runtime: 24 hours

    This humidifier from Magitec is made of ultra-durable ABS material, which makes it very easy to clean. The nozzles are fully rotatable, it can run for up to 24 hours on high, and the tank is transparent to make monitoring the water level easier. To help you out on that front, it also automatically shuts off when the water gets too low. Unfortunately, filling it up requires disassembling the machine.

    Pros
    • Durable ABS body
    • Rotatable nozzles
    • Transparent tank
    Cons
    • Refilling requires disassembly

    8. Levoit Large Room Humidifier

    LEVOIT Humidifiers for Bedroom Large Room Home

    Type: Ultrasonic
    Tank capacity: 6 liters
    Runtime: 36 hours

    Able to humidify over 750 square feet, this humidifier from Levoit offers both warm and cool mist settings for any type of room or plants. The tank is see-through, top-feeding, and the opening is large so you can clean it more easily. The built-in humidity sensor adjusts the mist level automatically if it detects any changes, which is perfect for maintaining a stable humidity level. Keep in mind that the material has a strong plastic smell, though.

    Pros
    • Large tank capacity
    • Long runtime
    • Built-in humidity sensor
    • User-friendly tank design
    Cons
    • Strong plastic odor when brand-new
    • Humidity sensor isn’t perfectly precise

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    Buyer’s Guide: selecting The Best Humidifier For Plants

    If your house is noticeably dry, it’s not a hospitable environment for your plants. They need a minimum level of ambient humidity to grow, or else you risk leaves drying out and turning brown. If it’s severely dry, they may even wither and die.

    Thankfully, a humidifier can solve this problem for dry areas. However, there are a few major considerations when choosing the right humidifier for your plants. To name a few, the room’s size, tank size, and whether you choose warm or cool mist. Let’s get into those a bit more.

    Room Size

    Not all humidifiers are created equally. Smaller humidifiers are great for humidifying, say, a tiny kitchen herb garden, but not so great for a large grow room. On the other hand, powerful humidifiers will leave small rooms drenched. However, they could have a lower setting that’s suitable.

    Use 500 square feet as an example of a large room, and pair that with a large, powerful humidifier for best results. For smaller spaces, go with a medium or small humidifier. If you want something versatile for various rooms, consider a large humidifier that has a wide array of humidity levels.

    Tank Size

    Larger tanks usually mean a longer runtime, and more importantly, less refilling. Many humidifiers are tricky to refill, so large tanks are generally preferred. Another thing to look at is whether the tank is transparent, because opaque tanks are a pain to monitor.

    Warm Or Cool Mist

    This one doesn’t matter as much as you think it does. Warm mist humidifiers use a built-in water heater, which makes them more energy intensive. The upside is that warm mist tends to be more pure than cool mist, with most bacteria filtered out. Cool mist is fine for most plants, but tropical plants may prefer warm mist.

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    Conclusion

    Humidifiers are a godsend for plant lovers in dry areas, but it can be tricky to find the right one. Our top picks are the Pure Enrichment MistAire and the Honeywell MistMate, but all of the products on the list are top-notch. Simply consider your humidity needs and choose according to the reviews above.


    Featured Image Credit: doterra-international-llc, Pexels

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