Indoor growing is a pretty common practice these days. Whether you raise plants for their beauty, medical value, or your love of them, their need to grow and thrive is important. If you have visited an ornamental garden or any area dominated by plants, you probably noticed the high level of humidity in the atmosphere. While watering plants is important, if you have consistently sunny conditions, finding the best humidifier for plants could be your best solution.
If you are dealing with cultivated plants in a grow room, you want to make sure you have the best and safest atmospheric conditions available for the plants’ survival. Areas with a high level of light and low humidity will need an increase the moisture in the air. And the best way to do add that moisture is to the best humidifier for plants.
|Tank Size||Technology||Mist Duration|
|Honeywell HCM350B||1 Gallon||Evaporative||24 Hours per Filling|
|Evergreen||0.5 Gallon||Ultrasonic||300ml per hour|
|Honeywell HCM710||1 Gallon||Evaporative||36 Hours per Filling|
|Vicks V745||1 Gallon||Ultrasonic Filter Free||24 Hours per Filling|
|Pure Enrichment Mistaire||0.3 Gallon||Ultrasonic||16hrs per Filling|
Humidifiers are mostly designed to serve humans and not plants, but the best humidifier can also help your lovely plants grow. Believe it or not, there are some humidifiers on the market that were designed with specific qualities that can adequately serve as a great humidifier for orchids and other plants. Here are a few tips and reviews to help you find the best humidifier for your plants.
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Is a humidifier good for plants?
If you live in a tropical area or a place with high green leaf content, you will notice the presence of warm or cool humid air that will circulate the environment. In comparison to a desert area that has dry air and low humid conditions with almost no plants, there needs to be a good level of humidity for plants to thrive.
The whole point of using the best humidifier for plants is to recreate a humid environment in your home or garden so that they can thrive.
Depending on the plans you are growing, some plants need a higher level of humidity to grow well. But you should be aware that extremely high humidity levels can actually do more harm than good. So yes, humidifiers are suitable for plants when they are used to create the right environment.
Qualities to consider when picking best plant humidifiers
- Grow Room size
Room size is a big consideration when you are buying a plant humidifier. So, depending on the size of the room, the humidifier that you buy should be able to efficiently serve the room’s needs and cover every square inch.
For a 300 square foot apartment and less, you will need the best humidifier for a small grow room. But for 350 square foot to 450 square foot room, you will need a medium-sized humidifier and, for any room size above 550 square feet, you will need a large sized humidifier is best.
Your humidifier should also be able to keep the room humidity above 60% to encourage the plant’s growth. You should avoid too much moisture in a small grow room and too low humidity in a large place.
- Humidifier type
In choosing the best plant humidifiers, you should buy an evaporative or ultrasonic cool mist unit that is mobile and portable. While humidifiers can be beneficial to the plants, the body of the humidifier also releases heat into the atmosphere that could affect the plant if the unit is placed too close. Keep in mind that the unit’s heat could cause dryness and possibly the death of the plant, so watch where you place the humidifier in relation to the plants in the room.
Portable humidifiers can be moved about quickly and situated in the most beneficial place near your plants. And, remember that cool mist humidifiers use more energy in comparison to a warm mist humidifier.
- Noise level
If you sleep close to your grow room, you might want to consider how loud the machine is. Even some of the best humidifier for tropical plants are noisy because they use fans that rotate when dispensing moisture into the atmosphere. Do some research and read some reviews to see how loud other users have found a humidifier before you buy it.
- Large water tank
Since the primary reason for using a humidifier is to make the atmosphere moist for the plants, you want a unit that can dispense mist at a higher rate than if you were using it for humans. Look for a product with a large water tank size, so you wouldn’t have to fill the tank too often when the water runs out.
Top 5 best humidifiers for plants in a Grow Tent
Special features: humidistat, antimicrobial filters, cool mist type, cool mist, item weight; 9 pounds, quiet care technology
Since its primarily intended for your plants, the Honeywell HCM350B Germ Cool Mist Humidifier gives you just the right amount of quietness thanks to its quiet care technology design. With this feature, noise levels drop as low as 25% in comparison to other evaporative humidifiers on the market. It also boasts a pretty good moisture management level with the ability to efficiently regulate humidity at a steady range between 40% to 60% based on your preferences.
This humidifier also boasts an elegant and clean mist production system with an extra chamber that uses ultraviolet lights to kill germs up to 99.9% in the water before it is mystified and released into the atmosphere. The Honeywell HCM350B also possesses filters that have been treated with antimicrobial substances to prevent the growth of germs. And the included Protec cleaning ball rounds up bacteria growth in the water tank for an added level of protection.
The device also uses a cool-mist technology that is capable of raising the humidity level in a 645 square foot apartment to 25% in cold weather. In warmer weather, the humidity level can be raised to 35%.
With a pretty comfortable top-fill design, the Honeywell HCM350B has a runtime of 24 hours on the low setting requiring infrequent refills and about eight hours on the highest setting. Although the tank size is only one gallon, it is easy to clean and comes with a three-year limited warranty. You are not able to use essential oils with this unit, which shouldn’t be a problem if you use using it for plants in the home.
The device employs a cool mist technology and is capable of raising a 645sqft apartment to 25% humidity in cold weather. In more warm weathers, the humidity level could be up by 35%. When using in the highest speed level, it lasts about 8 hours and at medium speed about 24-36 hours.
Special Feature: Ultrasonic, cool mist humidifying fogger, Adjustable Fog output control, large water tank, no-spill valve, item weight; 1.5 pounds
With a standout mist output rate, the Evergreen Pet Supplies Humidifier can effectively regulate humidity levels in any environment. The unit will raise the humidity level when it is low just enough to maintain it at an average level. The unit can also create an impressive 300 ml per hour.
The Evergreen Pet Supplies Humidifier also possesses a uniquely flexible and adjustable hose that can be attached to its output allowing it to further direct mist to specific areas. It features an impressive 2-liter capacity tank size offering a longer runtime and fewer refills. It also has an automatic shutoff feature in case the water in the tank runs out while its running and nobody is around preventing overheating and fire hazards.
Overall, it is pretty easy to refill and also features a no-spill valve on top that ensures a less messy refill experience. Although this device is primarily designed for pets, it is also beneficial when placed with plants. It has a beautiful design that includes a hose that is held on by a suction cup, and it is expandable and collapsible allowing you to bend and adjust it to the perfect shape.
The Evergreen Pet Supplies Humidifier also features an adjustable fogger that works well and is very quiet. Plus, the adjustable output allows you to choose options that range from a light mist to dense fog. The timer also gives you the ability to perfect the output desire by stabilizing the humidity level in the room. And, you also get a six-month warranty for added peace of mind.
Special Features: 3 speed settings, with protec antimicrobial, and very quiet, illuminated water window, antimicrobial filter, item weight; 5.49 pounds, certified frustration-free
Certified frustration-free, the Honeywell Top Fill Cool Mist Humidifier has been built to make your life easier. It is easy to refill when the water runs out, and it is easy to clean. With the presence of a transparent water level indicator, all you have to do is look and estimate how long you have until you need to refill the unit.
The Honeywell possesses a pretty large water tank giving you a runtime of 36 hours. It is built with a wick filter that does an excellent job of absorbing minerals from the water and preventing white dust problems. This filter is also designed with antimicrobial qualities allowing it to remove bacteria contaminates in the water with 99.9% accuracy.
While this unit is convenient, it is also pretty quiet, but can become louder when setting on higher speeds. With the auto-shutoff feature, you have peace of mind knowing that the device will turn off the device as soon as the water in its tank dries out. And, with a three-year warranty, you can be assured that your investment is covered for a long time.
Unlike a typical humidifier, the Honeywell humidifier only requires you to take the tank off and carry it to a tap to refill with relative ease. You can also purchase a demineralization cartridge in case you have hard water in your home, which will help to filter the mineral residues from the hard water preventing white dust. It will also work without filters, just make sure you use distilled water if you don’t want a white mist covering your plants.
Special Features: Quiet and dual mist settings
With a pretty large capacity, the Vicks Ultrasonic Cool Mist Humidifier is large enough to give you a backup of about 24 hours on the lowest setting. The unit provides the option of varying the mist output across both high and low settings with the analog control knob. And, while it is running, this unit is pretty quiet and will easily blend into the background noise of your home.
This unit does create white dust, which is produced and released along with the mist when hard water is used in humidification. One way you can avoid this problem is to strictly use distilled water, or by purchasing a demineralization filter separate from the original humidifier package. The demineralization filter is able to filter out the minerals that are in that water that causes the white dust problem.
While being filter-free is a strong point selling point of this unit, you will still have the extra cost of using distilled water or a demineralization filter. Otherwise, this product is available at a pretty fair price and is perfect for small to medium-sized rooms. Plus, the lack of an automatic shutoff feature could also end up giving the device a shorter life span.
Special Features: fairly large water tank, night light, 360-degree mist nozzle, item weight; 1.75 pounds,
With a water tank capacity of 1.5 liters, the Pure Enrichment Ultrasonic Cool Mist Humidifier has a runtime of about 16 hours on the high setting. This means that it will run a lot longer on the low setting, so you won’t have to refill it often. Plus, with a 360-degree mist nozzle, you will have more precision over the direction in which the mist is released into the room.
When you do refill the unit, it has an easy take apart design through the top of the tank’s inlet. This quiet humidifier ensures that it’s suitable for both day and night use as well as living room or bedroom use. For those that are light sleepers, keep in mind that it does have a light on the power button as well as an optional night light that will stay on or off depending on your preferences.
With the auto-shutoff safety feature, you have peace of mind knowing that it will kick in has also been built into the making of the pure enrichment ultrasonic humidifier, and it kicks in whenever the water tank is empty or removed. Perfect for small to medium-sized rooms, the Pure Enrichment Ultrasonic Cool Mist Humidifier is a great choice if you are on a tight budget, plus it comes with a two-year warranty.
How to mist Plants – How can I raise the humidity for my plants
Even after finding that best humidifier for your plants, you might be confused as to what is the best way to humidify a plant. To get the best results from your plants, follow these steps:
When using the best humidifiers for plants, always shower any outdoor plants from below. Misting below a plant will concentrate the water on the plant’s soil instead of just on the leaves. When you are done misting, most of the water molecules will fall on the soil enabling the plant to absorb more moisture through the root without drowning in the excess water that follows heavy watering.
Also, when the leaves of a plant are subject to excess moisture from misting above, they will become more susceptible to viral and bacterial infections. The moisture on the foliage will create an environment where the spores are more likely to germinate, especially if there is poor air circulation.
It is important to raise the humidity levels of your house plant in the right proportions. A humidifier for a plant will help you accomplish this by increasing the humidity levels of the environment where the house plant is placed. In an environment with a safe humidity level, a plant will be able to draw enough moisture for its daily survival and growth.
When should I use a humidifier for my plants
While a humidifier adds moisture to the air and is generally beneficial towards your plants, you should still know when and how to use it. For example, you should not mist your plants at night since misting at night encourages diseases.
It is recommended that you mist your plants in the morning allowing them to dry out during the day. At night, water won’t evaporate due to a lack of sunlight, which causes the soil and surface of the plant’s leaves to retain too much moisture. And, when there is excessive water in the atmosphere, there is a better opportunity for disease-causing organisms to thrive.
How often should I mist my plants?
Before going on to answer this question, you should know that the whole idea isn’t about misting the plants, but in ensuring that the humidity levels are always right for the proper growth of the plants. It is recommended that you shower your plants every morning providing them with enough water to live on throughout the day. And, depending on the type of plant, you should mist the plants as much as possible throughout the day to maintain their healthy humidity levels.
For example, orchids generally need a humidity range between 40% and 70%, while ferns are comfortable between 40% and 50%. Most other plants fall somewhere between 40% and 60%. Knowing this, you should be able to figure out what the proper humidity level is for your plants and the appropriate rate of misting that you will need.
Where to place humidifier for plants
While a good humidifier for plant is very useful for its health, placing the humidifier to close to the plant is not good for it. When a humidifier sits too close to a plant, the fan can draw in moisture from the area that it is facing removing moisture from the plant and leaving it with too little to survive on.
On the other hand, when the humidifier is placed too far away, there is a good chance that the humidity produced will have less of an impact on the plant. Remember that a good position for the humidifier is about three to six feet away, which is not too close but also not too far away. It also depends on the needs of the plant.
Can you use a diffuser as a humidifier for plants?
Since the main function of a diffuser is to mix essential oils with water and release them like a mist into the atmosphere, it does not serve the same function as a humidifier. However, a diffuser can add some amount of moisture to the air as it operates. Just keep in mind that is not what they are created for and the moisture that they do provide is not useful or high enough for the plant’s needs.
In comparison to a humidifier, a diffuser holds a minimal amount of water and would need to basically be refilled every hour depending on its size. It is not convenient for humidification purposes, and you should definitely purchase a separate humidifier for your plants instead.
How to create Humidity for outdoor plants
You should follow the steps below to create and maintain a safe humidity level for outdoor plants.
- Always plant in groups:
Grouping your plants will help them grow by allowing them to absorb moisture contents that other plants transpire. Basically, the moisture that is released by one plant is absorbed by another plant close to it, which forms a closed moisture efficiency system.
Also, smaller plants should be placed on a tray that is filled with pebbles and water. Moss should then be placed on top to trap the moisture in the soil making it ready and available for the plants.
- Growing plants in little jars or containers:
This have always been the right way to retain moisture in the soil for plants to use. We recommend you use of container boxes that hold a lot of soil, which can retain water for the growing plants.
- Planting smaller plants next to the taller ones:
This has always been the right way to transfer moisture. When moisture is formed on a taller plant, it will drip off and fall onto the shorter ones who will use it.
- Get a suitable Humidifier:
Finally, and most importantly, you should purchase a humidifier. The humidifier will be responsible for increasing moisture content in the environment as well as frequently misting the plants. It is recommended to find a humidifier with a long runtime.
Final Verdict: Best humidifier for plants 2021
Our Overall Best plants humidifiers
The Honeywell HCM350B is our pick as the best plant humidifier thanks to its high level of humidity that is released when compared to the other humidifiers on the list. It also has an inexpensive replacement filter, and it is pretty quiet when it operates. The Honeywell HCM350B also earns itself the overall best plant humidifier due to its combination of evaporative and ultraviolet technology.
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