Best » The 5 Best Humidifiers for Plants (2023) for plant enthusiasts

The 5 Best Humidifiers for Plants (2023) for plant enthusiasts

Bid farewell to arid atmospheric conditions and provide a warm welcome to flourishing flora by employing the following models.

by Edmund Blake & Robert Barnes
12 minutes read
Best Humidifiers for Plants

In the past few years, people who like plants have become much more interested in them. If you like indoor plants, you probably already know what kind of soil and how much light your favorites need. But it’s important to remember that many plants do best when there’s enough wetness around them. This is especially true for common flowers that like more humidity, like prayer plants, ferns, and calathea.

From my own experience, I can tell you that using a humidifier is a great way to make sure your flowers have the best conditions to grow. Not only will your plants thank you, but the extra water in the air will also be good for your face. If you live in a place where it gets cold and you have to heat your home, having a humidifier in the winter is a good idea. Putting plants on top of a pebble tray with water can provide some humidity, but a humidifier will quickly fill the air with the wetness your plants need.

A horticulturist at Costa Farms named Justin Hancock says that the normal houseplant should start using a humidifier when the relative humidity drops below 45%. But you should know that not every fan is the same. When picking one for your plants, think about things like the size of the tank, how long it will run, and how big the room should be. Some types of humidifiers make cool mist, while others make warm mist, and some can do both. Most of the best humidifiers for plants have a built-in sensor that helps you track and keep the right humidity level in your home. This makes sure that your houseplants do well all year long.

Best Humidifiers for Plants Comparison Table

Make sure the humidifier is on a stable surface away from plants so that water doesn’t hurt them. Follow the guidelines from the manufacturer for safe use and to keep mold or bacteria from growing in the humidifier.

FeatureTypeCapacityRuntime on One FillCoverage AreaMist Output SettingsDesignWarrantyLatest Deal
Honeywell Designer SeriesUltrasonic Cool Mist1.25 gallons (4.7 liters)Up to 24 hoursMedium to Large Rooms2 (High and Low)Stylish, contemporaryLimited 3-yearCheck Deal
LEVOIT Classic300SUltrasonic Cool Mist1.5 gallons (6 liters)Up to 36 hoursLarge RoomsAdjustable (Low, Medium, High)Stylish2-yearCheck Deal
Raydrop Cool MistUltrasonic Cool Mist2.5 liters (0.66 gallons)Up to 24 hoursMedium-sized rooms360-degree adjustable nozzleSleek and space-saving1-yearCheck Deal
Whole House Space-Saver by AIRCAREEvaporative6 gallons (22.7 liters)Up to 70 hoursWhole house4 (Variable)Space-saving tower design2-year limitedCheck Deal
PureGuardian Cool Mist UltrasonicUltrasonic Cool Mist1.5 gallons (5.7 liters)Up to 100 hoursMedium to Large RoomsAdjustable (Low, Medium, High)Silver Clean™ Protection3-year limitedCheck Deal

List of the Best Humidifiers for Plants

In order to prevent mineral buildup on your plants and the components of your plant humidifier, it is recommended that you use distilled or filtered water in your plant humidifier. There is a possibility that the minerals in tap water will cause long-term damage to your plants. The frequency with which you should operate the humidifier is determined by the degree of dryness present in your interior environment as well as the humidity requirements of your plants.

Honeywell Designer Series Humidifier

Best Humidifiers for Plants
TypeUltrasonic Cool Mist Humidifier
Capacity1.25 gallons (4.7 liters)
Runtime on One FillUp to 24 hours
Coverage AreaMedium to Large Rooms
Mist Output Settings2 (High and Low)
Noise LevelQuiet operation
Check Price

The Honeywell Designer Series Cool Mist Humidifier is our top pick for a reliable humidifier that will keep your plants happy without giving them more water than they can handle. Even though this humidifier looks almost too sleek to just provide humidity for your houseplants, we think it’s a great, unobtrusive model that you can put in your living room or home office with your plants. During our tests, this humidifier made a very fine mist and didn’t leave any dust on the surfaces around it. It’s the best way to add moisture to an area without flooding the plant leaves with too many water droplets.

It’s also easy to set up, turn on, and fill up because it only has one setting and the water tank can be taken out. You can turn the dial up or down to get the amount of mist you want, but there is no screen to show you how much mist is coming out. When this fan runs out of water, it turns off by itself and a light comes on. We got a lot of comments about how quiet this humidifier was, which could be a big plus if you want to use it in a bedroom or office with houseplants.

The Good

  1. Stylish and modern design adds to room decor.
  2. Quiet operation ensures a peaceful environment.
  3. Long runtime on a single tank fill.

The Bad

  1. Some users may find the 1.25-gallon tank relatively small for larger rooms.

LEVOIT Classic300S

Best Humidifiers for Plants
TypeUltrasonic Cool Mist Humidifier
Capacity1.5 gallons (6 liters)
Runtime on One FillUp to 36 hours
Coverage AreaLarge Rooms
Mist Output SettingsAdjustable mist levels (Low, Medium, High)
Noise LevelWhisper-quiet operation
Check Price

In our guide to general humidifiers, we called this cool mist humidifier the best overall, and we still think it does a good job of keeping your plants moist. We like how quiet it is and how easy it is to put water in the big, clear tank on top. You can also link the humidifier to the VeSync app or use it with Amazon Alexa and Google Assistant to control it from a distance or without using your hands.

You can set your own misting routine and use the auto mode, which will change the amount of mist throughout the day to keep the room at the right level of humidity for your plants. Sleep mode lowers the amount of mist and dims the display so that the light won’t keep you up. On the low mist setting, the brand says the humidifier can run for up to 60 hours.

The Good

  1. Large water tank provides extended runtime.
  2. Adjustable mist settings for precise humidity control.
  3. Whisper-quiet operation ensures a peaceful atmosphere.

The Bad

  1. Smartphone control available only in specific models.

Raydrop Cool Mist Humidifier

Best Humidifiers for Plants
TypeUltrasonic Cool Mist Humidifier
Capacity2.5 liters (0.66 gallons)
Runtime on One FillUp to 24 hours
Coverage AreaMedium-sized rooms
Mist Output Settings360-degree adjustable mist nozzle
Noise LevelWhisper-quiet operation
Check Price

This humidifier is both stylish and useful because it has a slim, circular shape. With dimensions of 4.7 by 4.7 by 11 inches, it can easily fit on a desk or bedroom table. It can run for up to nine hours, which is longer than many other small models, some of which can only run for part of the night (unless you don’t sleep much). The front has a dial knob that makes it easy to change between low and high settings and choose how much mist you want.

The front of the humidifier shows how much water is in it, and when the water runs out, the machine turns off by itself. This humidifier makes less than 32 decibels of noise, which is as quiet as a whisper. Even though there are quieter units on the market, most people should be able to sleep near this one without any trouble. If you want to use it every night, you will need to fill it up every night. Since the unit is small, it’s easy to fill up.

The Good

  1. Compact and space-saving design.
  2. Adjustable mist nozzle for customizable direction.
  3. Whisper-quiet operation ensures minimal disruption.

The Bad

  1. Smaller water tank may require more frequent refills.

Whole House Space-Saver 831000 Evaporative Humidifier by AIRCARE

Best Humidifiers for Plants
TypeEvaporative Humidifier
Capacity6 gallons (22.7 liters)
Runtime on One FillUp to 70 hours
Coverage AreaWhole house
Fan Speeds4 (Variable)
Automatic Humidity ControlYes
Check Price

Because of its enormous 6 gallon tank, this evaporative humidifier from AIRCARE, a company that has been a leader in the humidifier industry for many years, produces a significant amount of humidity and has one of the longest run lengths available on the market. This machine actually delivers the plant-happy humidity levels that other ordinary machines are unable to provide because it has three different fan settings and a humidistat function that lets you to control the humidity up to 65%.

You can manage the power, the humidity levels, and the fan speed with just three simple buttons, and two indicators will let you know when the filter needs to be changed and when the water level is becoming low.

The Good

  1. Large 6-gallon capacity ideal for whole-house humidification.
  2. Extended runtime of up to 70 hours on a single fill.
  3. Variable fan speeds and automatic humidity control for precise control.

The Bad

  1. Bulkier than some other models due to its large capacity.

PureGuardian Cool Mist Ultrasonic Humidifier

Best Humidifiers for Plants
TypeUltrasonic Cool Mist Humidifier
Capacity1.5 gallons (5.7 liters)
Runtime on One FillUp to 100 hours
Coverage AreaMedium to Large Rooms
Mist Output SettingsAdjustable mist levels (Low, Medium, High)
Noise LevelWhisper-quiet operation
Check Price

Simplified in both how it looks and how it works, “I like the simple, streamlined design, especially the top-fill tank,” says DiClerico. The three-speed setting makes it easy to handle and keeps the plant from getting too wet. “It’s also fairly small, so it can fit in with a group of plants on a tabletop or window sill,” he says. We like that the water level light comes on when there isn’t enough water.

The simple shape looks good on your table and makes the humidifier easy to clean because there aren’t a lot of places for mold and dirt to build up over time. It also has an easy-to-fill top tank and a built-in nightlight with seven different colors, which is great if the child’s bedroom has plants. You can choose aromatherapy, which is like some of the other choices.

The Good

  1. Long runtime of up to 100 hours on a single fill.
  2. Adjustable mist settings for customized humidity control.
  3. Whisper-quiet operation for a peaceful environment.

The Bad

  1. The relatively small tank may require more frequent refills in larger rooms.

The Importance of Proper Humidity for Indoor Plants

Keeping the right humidity levels is one of the most important things you can do to keep your home plants healthy and growing. Many plant lovers pay attention to things like light, water, and the quality of the soil, but they often forget about humidity. But it is a very important part of the health of your green friends. In this section, we’ll talk about how important it is for indoor plants to have the right humidity and why you shouldn’t forget about this often-overlooked part of plant care.

  • Optimal Growth and Development: Indoor plants, especially tropical and subtropical types, grow and develop best in places where the humidity level stays the same. Having the right amount of air helps photosynthesis, which helps plants make energy and grow faster. When humidity is too low, plants may have trouble making food from light, which slows their growth.
  • Keeping from getting too dry: When humidity is low, plants can lose water through evaporation faster than they can take it in through their roots. This causes the plant to lose water, which can cause its leaves to wilt and make it look worried.
  • Reduced Stress and Disease Resistance: The right humidity helps keep the right amount of moisture. Stress and disease resistance may go down in low-humidity indoor settings. This can make plants more stressed and open to pests and diseases. When plants are worried, their natural defenses get weaker. This makes spider mites and aphids more likely to attack them. Having enough humidity makes it easier for a plant to fight off these dangers.

How to Choose a Right Humidifier Size for Your Plant Space?

It’s important to choose the right size humidifier for your plant space to make sure your home plants get the right amount of humidity they need for healthy growth. Humidifiers come in different sizes and can hold different amounts of water, so choosing the right one depends on how much space you have for indoor farming. In this part, we’ll talk about the steps you can take to find the right size humidifier for your plant space.

  • Measure the Space for Your Plants: First, find out how many square feet your home plants take up. This number will be a key part of figuring out how much water the humidifier can hold.
  • Think about the ideal level of humidity: Different plants need different levels of humidity, so it’s important to know the ideal humidity range for each plant species you have. Find out how much wetness your plants need so you can give them the best conditions.
  • Figure out how much water is needed: Once you know how big your plant space is and the right amount of humidity, you can figure out how much water it needs. The general rule is that you need about 1-2 gallons of water per day for every 100 square feet to keep the humidity level you want.
  • How to Choose the Right Size: Based on what you’ve figured out, choose a humidifier with the right size. There are different sizes of humidifiers, like gallons per day (GPD) or liters per hour. Make sure that the humidifier you choose can put out the right amount of wetness.

Questions and Answers

What are the signs that my indoor plants need more humidity?

Indoor plants with low humidity have leaf tips that are brown, leaf edges that are crispy, leaves that droop, and growth that slows down. If you see any of these signs, it’s a sign that your plants could use more wetness.

What types of humidifiers are suitable for plants?

There are many different kinds of humidifiers, such as atmospheric, ultrasonic, and steam. Plants often use evaporative and ultrasonic humidifiers because they can spread water around evenly.

How do I choose the right humidifier for my plant collection?

To choose the right humidifier, you should think about things like the size of your plant room, how much humidity your plants need, and the type of humidifier that fits your needs best. Make sure the humidifier’s size fits the place you have for your plants.

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