8 Best Humidifiers For Plants

When you have a dedicated grow room for your plants, you need a humidifier that will keep the moisture in the optimal growing range. The HuPro Pro-771 brings a compact design and gives you the ultimate control for easy humidity management.

The unit has a footprint of only 15 x 7 inches, standing 10 inches tall, so it won’t be hard to find a place to set it up. It also features a dual mist nozzle with 360-degree rotation so that you don’t have to worry about putting all the moisture against your wall or whatever else may be close to the unit.

You get plenty of runtime with the 1.6-gallon reservoir, which provides up to 30 hours of continuous runtime. The reservoir itself has a removable lid for top-filling the unit, making it easy and mess-free when you need to add water.

Whether you live in a cooler or warmer climate, the dual cool/warm mist options make this unit versatile. To create cool mist, the unit utilizes an ultrasonic plate that generates a fine vapor. For the warm mist, the unit heats the water to generate steam, which leaves the unit at a maximum of 140 degrees Fahrenheit. Regardless of whether you choose the warm or cool mist option, you have three power level options to control the amount of moisture output. On high, the unit will push out up to 350 ml/hour.

A key to effectively managing humidity for your household plants is an automatic humidistat. The HuPro offers an automatic feature that maintains your ideal humidity between 30% and 85%. While 85% may be high for most homes, higher humidity is actually desirable in grow rooms during early growth stages. With the automatic humidistat comes an automatic shut-off when it reaches your desired humidity level. It also has a safety shutoff when the reservoir empties, along with an audible alert that it needs more water.

• Tank Size: 1.6 gallons
• Room Size Suitability: 500 sq. ft
• Weight: 6.17 lbs
• Special Features: 12-hour timer, sleep mode

The Pure Enrichment MistAire XL keeps humidifying your space simple and in a sleek package. The teardrop design has a footprint of 7.5 x 10 inches, standing only 12.5 inches tall. This allows you to set it up on an end table, shelf, or counter easily.

This humidifier has the option of interchangeable single or dual mist nozzles, both offering 360-degree rotation so that you have ultimate control over the mist direction. Unlike many other models which have two or three output settings, this unit has a dial with variable mist control so that you can truly regulate the output. Running on high, the unit will vaporize up to 250 ml per hour.

You get up to 20 hours of continuous operation from each fill of the 1-gallon reservoir. If you need more moisture in your space, the entire reservoir will empty within 10 hours while running on high. When the tank empties, the unit has an automatic shut-off feature to protect the ultrasonic plate. To fill the unit, simply remove the cap from the bottom of the reservoir and refill.

The unit produces cool mist through ultrasonic technology, so you don’t have to worry about a heating element burning out. To keep the ultrasonic plate working properly, plan to clean it regularly with the included cleaning brush.

While the included nightlight option doesn’t provide the light your plants need to grow, it does give a subtle glow to your space. The unit gives you three subtle color options including blue, green, and red.

Don’t worry about this humidifier driving your energy bill through the roof. The ultrasonic technology is rated for a minimal 25 Watts, meaning you’re likely to spend less than a cup of coffee even if you run it continuously every day.

• Tank Size: 1 gallon
• Room Size Suitability: 500 sq. ft
• Weight: 2.55 lbs
• Special Features: Night light

Sleek and modern meets high-capacity moisture control with the Elechomes UC5501. This unit has a modern design, but won’t overtake your space with a footprint of only 11.6 x 7.7 inches. The 11-inch height makes it easy to stash on a shelf near your plants to give maximum benefit to everything from household plants to a growing tower.

The unit offers the best of both humidifying worlds with the option for both cool and warm mist. You have the option of three mist output settings, with a minimum of 100 ml/hour when using low cool mist, and up to 550 ml/hour on high warm mist. You’ll also easily direct the mist output with the dual 360-degree rotatable nozzles so that you can ensure nothing gets waterlogged. An ultrasonic plate generates the cool mist, creating a fine mist that easily dissipates in the air.

The unit has an incredibly long runtime between tank refills, with each tank lasting up to 60 hours of continuous operation. When it is time to refill the tank, it has a bottom-fill design, so you simply lift the entire tank off the unit and then replace it once it’s filled. The refill cap has the option of adding a filter to help remove minerals from the water, which you purchase separately.

If the unit runs dry, you don’t have to worry about damage to the heating element or the ultrasonic plate with the automatic shutoff. It also has a sensor to detect if there’s a high temperature on the unit, protecting it from overheating or hurting someone.

To help ensure your plants always have the right moisture in the air, the unit comes with automatic humidity control. You can set the unit to the desired humidity level for your indoor garden between 30% and 90%, in 5% increments. If you need to quickly pump a lot of moisture into the air, the unit also has a continuous mist option.

• Tank Size: 1.6 gallons
• Room Size Suitability: 750 sq. ft
• Weight: 5.07 lbs.
• Special Features: Intelligent humidity sensor

It’s easy to give your plants what they need when you have control over your humidifier right in your smartphone. The LEVOIT Classic 200S is equipped with Wi-Fi, so you can control it from the VeSync app on your phone or tablet.

You’ll be able to easily set up the compact unit near your plants with a footprint of only 8 x 6 inches. It stands about 14 inches tall and has a 40-inch mist height while running on high. This means you’ll want to make sure you have plenty of space above the unit to prevent shelves or anything else from getting wet. The unit does have a dual rotating mist nozzle to help you more effectively direct the water vapor.

The humidifier uses ultrasonic technology to vaporize the water, so you don’t have to worry about heating elements. You won’t have to worry about it running dry in the middle of the night, either, with each tank offering up to 40 hours of continuous vapor while running on low. The unit comes with a special brush to help keep the ultrasonic plate clean from mineral buildup. If the unit does run dry, there is an automatic shut-off to prevent damage to the ultrasonic plate.

From the single-button control, you have four different operational options. There is low, medium, and high mist, which is indicated by the color of the power button. You can also select the auto mode, which adjusts the unit’s settings to maintain 45% relative humidity.

To provide more accurate humidity control for your plants, consider using the VeSync app. This allows you to monitor the humidity level in the room in real-time. It also has programmable timers and customized schedules. These features ensure that your unit will run when your plants need the moisture most, regardless of whether you’re there to turn it on.

• Tank Size: 1 gallon
• Room Size Suitability: 376 sq. ft
• Weight: 3.5 lbs
• Special Features: Connects with voice assistants like Alexa, Siri, and Google Assistant

When you have plants that need additional moisture, sometimes simple humidification is all you need. The Pure Guardian H965AR provides straightforward functionality with enough humidification to help your plants thrive. This unit has a sleek circular design measuring 8.5 x 8.5 x 14.25 inches, so it can easily fit on a shelf or counter.

The unit uses ultrasonic technology to generate the mist. You’ll enjoy up to 70 hours of continuous operation from the 1-gallon reservoir. When the tank runs low, the light on the power button will turn red to alert you before it runs empty. The ultrasonic plate is protected with an automatic shutoff if the reservoir does run out.

The reservoir itself is a bottom-fill design, so you remove the entire reservoir from the base when it requires filling. While the design is natively filter-free, there is the option for a decalcification cartridge. You purchase this separately, and it installs on the reservoir cap for the water to flow through before flowing to the ultrasonic plate.

You control the unit with the power button, which also toggles between the three different mist settings. These ensure you get the right amount of moisture for your plants, regardless of their growth stage. It also has a nightlight feature, which is controlled with the second button. The mist nozzle on the top of the reservoir rotates, allowing you to easily direct the mist without having to rotate the unit.

You also get the option for a gentle glowing nightlight feature. This is a small bulb in the base that fits into a cap in the reservoir, giving off a gentle blue glow. If you prefer a lightless function, the unit runs perfectly without ever turning on the light. Don’t worry about the unit disturbing the ambiance of your living space, being it runs nearly silently.

• Tank Size: 1 gallon
• Room Size Suitability: 320 sq. ft
• Weight: 2.4 lbs
• Special Features: Anti Microbial Silver Clean Protection

When it comes to moisturizing your plants, the key is consistent humidity at the right level. The LEVOIT Dual 100 is the perfect device for small rooms to give you between 8 and 20 hours of continuous humidification, despite a compact design. The round unit is about 7 inches in diameter, standing nearly 11 inches tall. This makes it perfect to fit on a growth tower or a shelf near your plants. The 5-foot power cable means you can put it up on a shelf to help better distribute the moisture throughout the room.

Even better for your plants is the smart sensor that works with the sleep mode. While using this mode, the unit will maintain 60% relative humidity, while shutting off the lights on the front of the unit. It also keeps the noise down to an ultra-quiet 24 dB, so you won’t notice it running, regardless of the room you have it set up.

The unit is also effortless to use, with two buttons and a top-fill design. The primary button is the power button that allows you to choose between three mist levels. The second button activates the sleep mode. To fill the unit, simply remove the top cover, and fill the tank. If you want to add some aroma to your home, you can add 10-15 drops of essential oil to the base chamber, below the water reservoir.

You also don’t have to worry about the unit affecting your plants by putting chemicals in the air with the BPA-free polypropylene construction. The wide opening to fill the reservoir also makes it straightforward to clean, so the unit won’t distribute mold spores into your air either. Don’t worry about your unit running out of water and damaging the sonic plate with the automatic shut-off feature.

• Tank Size: 0.5 gallons
• Room Size Suitability: 260 sq. ft
• Weight: 0.63 lbs
• Special Features: Built-in humidity sensor

Basic humidification is often underrated when it comes to finding the right humidifier to keep your plants healthy. However, once you find the right amount of moisture you need to add consistently, it’s just a matter of keeping your humidifier running. The raydrop Cool Mist Humidifier makes it easy to add the perfect amount of moisture to your air all the time.

The unit has a reservoir of just over a half-gallon reservoir that will give you up to 30 hours of continuous runtime on low. This means you can easily keep the unit filled and running around the clock to keep just the right amount of moisture in your air. The control is a simple dial, so you can get just the right amount of moisture output, up to 180 ml per hour.

It does this without consuming a lot of space, measuring only 7.2 x 7.2 inches, and standing only 12 inches tall. You will easily find an end table, countertop, dresser, or shelf to set up this unit. No matter where you set it up, you’ll barely notice it running with only 23 dB of sound, which is barely the sound of a whisper.

The top-fill design makes it easy to refill the unit without having to take it apart. Simply grab a pitcher or bottle and fill the unit without moving it. The top-fill design also makes it easy to clean the unit. Simply grab a cloth and wipe it out every week to help prevent bacteria, mildew, or mold from developing.

The unit uses sonic technology to produce the water vapor, rather than using a heating element to create steam. This helps you save energy running the unit, with a power consumption of only 25 Watts.

• Tank Size: 0.66 gallons
• Room Size Suitability: 200 sq. ft
• Weight: 2.44 lbs
• Special Features: Automatic shut-off

When your plants are in your office or other small space, you may need a humidifier that can easily be moved or put away. The O-Mei Stars mini humidifier is a perfect option for adding some moisture to keep your plants thriving. The unit is round, measuring 2.8 inches across and standing only 5.9 inches tall. This makes it perfect for setting up on a desk near your office plants. The reservoir size is likewise compact, at 0.7 pints of water.

The unit has two different mist functions to adjust how much moisture it puts into the air and how long it will run. The first function is continuously on, which vaporizes 70 ml per hour and will run for up to 5 hours. The second function is intermittent, in which the unit will run 3 seconds on and 3 seconds off. With this function, it vaporizes 35 ml per hour and will run for up to 10 hours.

The unit uses a wicking technology to vaporize the water in this unit. When you first fill the unit, the wick needs a few minutes to absorb some water and be ready to start vaporizing. Alternatively, you can take the wick out of the unit and soak it to make it ready to use more quickly. The unit is rated as consuming a mere 2 Watts due to the size and technology used.

You’ll be able to plug it in with the included USB cable, either into a wall adapter or into your computer. If you require extra length, you’ll easily find another power cord with a micro-USB end at a local or online retailer. You will need to have your own power adapter, as the unit doesn’t come with one. Exercise caution if you choose to plug it into a computer, being it contains water that will spill if knocked over.

• Tank Size: 0.7 pints
• Room Size Suitability: 150 sq. ft
• Weight: 0.4 lbs.
• Special Features: Nightlight feature that allows you to choose between white or a rotating selection of seven colors.