Best Place to Put Humidifier for Indoor Plants – Beginners Guide

Setting your humidifier approximately 4 feet away from your indoor plants is a basic rule, but did you know that the size and type of your humidifier can also significantly affect plant growth? Discover how to choose the right humidifier for your plant babies as you explore our beginner’s guide for the best place to place humidifiers for your tropical plants.

where to place humidifier for plants

In this guide, we will be exploring:

  • Optimal humidifier placement for plant growth, considering air circulation, plant types, and risks of over-hydration or mold.
  • The impact of humidity on plant life cycles, transpiration, and methods to create an indoor plant-friendly microclimate.
  • Choosing the right humidifier: comparing cool vs. warm mist, high-capacity vs. standard, and ultrasonic vs. evaporative humidifiers.

So grab a coffee and get comfortable because we’ve got plenty to cover!

Where to Place Humidifiers for Plants

So you’ve decided to get a humidifier for your indoor plant collection – good on you! You are definitely on the right track to becoming a considerate plant parent.

But now you have the dilemma of how and where to set up your new humidifier.

The good news is you are in the right place.

Let’s explore all the different positions you could place a humidifier around your indoor plants. Figuring out the specifics can help maximize your indoor garden’s benefits.

Positioning on Raised Surfaces

Consider placing your humidifier on a raised surface such as a shelf or table. This allows the released moisture to fall downwards, enveloping your plants in a soothing cloud of humidity. But do remember to keep it slightly away from your beloved plants and electronics!

Floor Placement

Suppose you have larger houseplants or an assortment of plants on plant stands. In that case, consider placing the humidifier directly onto the floor. Just ensure there’s still some valuable space between them and this appliance – give them room to breathe!

Window Areas

Placing your humidifier near a window helps if those drafts dry out your darling plant babies. It effectively counters dry air flow from outside, providing that nice moisture balance for your plants’ leafy pores (in botany terms: stomata!)

Corner Placement

For optimal humidity spread across an entire room set of plants, putting the humidifier in a corner often does the trick (especially if it oscillates). The walls can then help direct moist air back toward each green baby.

humidifier blowing steam out

Central Location vs. Corner Placement – Which is Better?

Sometimes, when you have too many options, it can lead to indecision.

To help you where to place a plant humidifier, we’ve listed some pros and cons when comparing a central location vs. a corner placement.

Central Location Placement


  • Optimal Coverage: Having your humidifier in a central location means humidity will be evenly dispersed among your plants. If you’ve created an indoor jungle, this ensures that all of your green friends get the benefit.
  • Pleases All Plant Types: Different types of plants prefer different levels of humidity. A centrally placed humidifier can help maintain an environment where every plant is happy.


  • May Require Frequent Refilling: Central placement might require a larger output to reach all your plants, which could mean frequent refilling.
  • It might only be suitable for some space layouts: Depending on how you have configured the rooms, central placement might feel disruptive or obstructive, especially if space is tight.
  • Not Ideal for Less Humidity-Loving Plants: Some plants, like cacti or succulents, don’t love excess humidity. Centrally placed humidifiers may be troublesome if such species are present with tropical ones.

Corner Placement


  • Targeted Humidity: Plants that love extra moisture will thrive near a corner humidifier. Tropical wonders like ferns and Calathea would enjoy it here!
  • Saves Space: If you’re short on space, placing the humidifier in the corner keeps it out of foot traffic by freeing up valuable floor area.
  • Less Refill Needed: As it’s targeted to a specific location, less water may be needed. Which means fewer refills as compared to central positioning.


  • Limited Range: A corner placement can only sometimes provide adequate humidity to plants located further away. Layout is crucial here.
  • Possible Over-Humidification: This method could lead to overwatering for plants closest to the unit due to concentrated moisture dispersion.

Unfortunately, we cannot give you a definitive answer (believe us, we would if we could)! But the decision will come down to your available space and the layout of your plants in your home.

Warnings With Using Humidifiers for Plants

So, you’ve got your humidifier all setup? That’s a significant first step! Now, here’s the thing. Adding extra moisture to your indoor air can sometimes lead to some hiccups.

Don’t worry, it’s nothing major! Here are a few things you should watch out for.

Avoiding Mold and Fungal Growth

The added moisture from the humidifier does mean there’s potential for unwanted residents like mold or fungus to set up camp in and around your plant babies.

Spotting the Signs of Mold

Spotting any potential problems early is key. Look for fuzzy or slimy patches on the surface of your soil or strange colors on your plant’s leaves. This could indicate a fungal issue.

Believe it or not, not all molds or funguses are harmful! Some can even help break down organic matter in the soil.

Preventing Unwanted Fungal Growth

How do you prevent problems? Good question!

  • Balancing the right amount: As Goldilocks would say – not too much humidity, not too little – just right!
  • Air circulation: Make sure your plants aren’t jam-packed together. Give them room to breathe.
  • Cleanliness: Keep dead leaves off the soil surface to remove food sources for mold.
  • Monitoring: Regular check-ins with your green darlings will allow you to spot any issues quickly.

Remember, we’re dealing with living organisms here – both the fungi AND your plants – so patience and attention will go a long way! Stay positive; you got this!

fungus growth in pot plant

Preventing Over-Hydration and Root Rot

Adding a humidifier into the mix can sometimes have knock-on effects on other aspects of your plant maintenance care regime – particularly your watering schedule.

The extra water in the air acts as a secondary water supply for plants, which can often result in over-hydration.

And as most plant parents know, with excess moisture, the dreaded root rot is always threatened!

Signs of Over-Hydration and Root Rot

Firstly, let’s understand what we need to look for. Yellowing leaves are often the first sign of over-watering. Also, watch for limp or falling off leaves. In extreme cases, your plant could even rot from the roots upward.

Adjusting Humidifier Use

The key is to monitor where you place your humidifier and how often you use it. Increasing the distance between your plants and the humidifier can help reduce moisture absorption.

How to Prevent Over-hydration and Root Rot

  • Checking Your Plants Regularly – Check in with your green buddies regularly! Feeling the soil (either with your finger or a moisture meter) will indicate whether it needs watering.
  • Choosing The Right Pot – Remember that well-draining pots are as important as drainage holes at the bottom. Consider incorporating materials like perlite into your potting mix for added drainage.
  • Watering Wisely – While our love for plants might want us to dote on them daily, it’s essential that we only water them every day if necessary based on their species’ needs. Also, keep track of humidity levels – they play a more significant role than one might think!

Safeguarding Electronics and Electrical Outlets

First, we all know water and electricity don’t mix well. So, when using a humidifier, it’s crucial to ensure it doesn’t get too close to your electronics or electrical outlets.

Protecting Your Electronics

Your electronics are sensitive to moisture over time. The moisture can condense on your gadgets if a humidifier is too close. This can, unfortunately, lead to long-term damage. So, let’s keep them at a safe distance!

Safety of Electrical Outlets

Similarly, the steam from the humidifier can get into the outlets for electrical outlets. This can lead to short circuits or, worse, electrical fires. We don’t want that happening!

Ideal Placement of Humidifiers

Where should you place your humidifier, then? The best spot is usually a few feet away from any electronics or outlets. Make sure it’s on a flat, stable surface to avoid any accidental spills, too.

Proper Usage and Maintenance

Lastly, always turn off and unplug your humidifier when it’s not in use or when you’re refilling it. Regular cleaning is also key – this prevents any nasty buildup and keeps your humidifier working at its best for your leafy pals.

Effects of Humidifier Placement on Different Types of Plants

We always encourage plant owners to increase their plant awareness and understand their baby’s preferences. Or, more specifically, their humidity preferences. And it is one of the three plant parenting LAWs we teach: Lighting, Awareness, and Watering.

outdoor plants with humidity in air

In this section, we’ll discuss different types of plants and how humidity affects their health and growth.


Succulents are desert dwellers born and bred in dry climates. They’re the camels of the plant world, storing water in their fleshy leaves for the long haul. So, a humidifier is only sometimes their best friend. If you use one, place it far from these plants to avoid overwatering or causing root rot.

Tropical Plants

On the other hand, tropical plants love a little humidity. They miss the wet and warm rainforest, so bringing in a humidifier is like throwing them a homecoming party. Place your humidifier close to these plants, but not so close that the leaves are constantly wet—that’s a recipe for fungal issues we discussed earlier.

Air Plants

Air plants are unique—they don’t need soil to survive. What they do need is good air circulation and a bit of humidity. A humidifier can be beneficial here, but remember to place it at a distance to avoid over-saturating these little guys.


Orchids are tropical by nature and appreciate a humid environment. However, they also need good airflow to prevent disease. A nearby humidifier can mimic their natural habitat, but remember to set it on a low setting and keep it a bit distant to strike the right balance.

Understanding Humidity and Plants

Now that you know where to place a humidifier, let’s take your plant parenting knowledge to the next level by understanding the fascinating world of plants and humidity.

Transpiration in Plants

As a plant parent, there is a term you should become familiar with – transpiration (think of it as plant sweating). It’s a crucial process that allows your leafy friends to move water from their roots to leaves for photosynthesis, cooling down, and even communicating with their neighboring buddies.

Impact of Winter on Indoor Humidity

However, winter can be a tricky time for your indoor garden party. Our heater tends to lower indoor humidity dramatically, which might cause beloved greens discomfort (they might start looking less lively).

Humidifiers Protecting Plants in Drier Conditions

Here’s a secret weapon – humidifiers can be your best allies when protecting your plants against dry conditions induced by heaters or naturally arid climates.

These devices release moisture into the air and effortlessly create a paradise for your tropical companions or any plant that enjoys humid environments.

Don’t worry if it all seems overwhelming—you’re doing great just getting started! Remember: the key to successful plant parenting is understanding their needs and endlessly showering them with love (and occasional watering).

Benefits of Humidifiers for Indoor Plants

Indoor environments can often be quite dry, which could be better for most houseplants.

  1. The Greenhouse Effect – In their natural habitats, most of our beloved indoor greens are used to more humid climates, conditions similar to that of a tropical rainforest. A humidifier recreates this climate by adding moisture to the air and mimicking their natural living conditions.
  2. Quenching Their Thirst – Our plant babies absorb water through roots and drink from their leaves (imagine drinking with your whole body – fun!), which is another reason they appreciate increased humidity levels.
  3. Skin Deep Benefits – Dry air can cause plants’ leaves to wilt or brown at the edges. But fret not! Maintaining the appropriate humidity levels will allow your plants to stay vibrant and glossy 24/7.v
  4. They Breathe Easier – Plants respire – yes, breathe – through tiny pores called stomata primarily located on their leaves. Dry air may force these pores to close and hinder your green kids’ ability to “breathe.” A humidifier assists in keeping these pores open for business!
  5. Helps Ward Off Pests – Nobody likes uninvited guests! Surprisingly enough, many common household plant pests dislike high-humidity situated environments as they develop in dry places. So, a humidifier serves as a gentleman rescuer against these irksome intruders!

Which Type of Humidifier is Best for Indoor Plants?

You may or may not have known, but not all humidifiers are equal.

There are different types of humidifiers, each with their benefits.

Cool Mist Humidifiers

Let’s start with cool mist humidifiers. These handy devices use a filter to absorb water, which a fan blows into the room as an ultra-fine spray.

So what’s so good about them?

A cool mist humidifier can be an excellent option for indoor plants that crave high humidity and cooler temperatures—like ferns or orchids. Plus, they use less electricity since there’s no heating element.

Warm Mist Humidifiers

Now, onto warm mist humidifiers. These work by boiling water and releasing it into the room as steam. Sticky, warm droplets will make your tropical buddies happy – think Philodendrons and Alocasia!

Also, boiling water means less bacteria in the air, offering a healthier space for you and your green friend.

High-Capacity Humidifiers

When maintaining a small indoor jungle, sometimes you must go one step further than standard options.

This is where high-capacity humidifiers come in.

They have larger tanks and greater output, meaning more sustained humidity over time – perfect for those drier climates!

And don’t worry about refills; these giant tanks last longer between top-ups.

Ultrasonic Humidifiers

Have you ever thought about how silence can be golden? Ultrasonic humidifiers might be the answer!

They work using high-frequency sound vibrations to break apart water particles, producing gentle mist – quietly!

You will surely appreciate this peacekeeper if your leafy pals are in quiet areas like a home office or bedroom.

Evaporative Humidifiers

While we’re at it, let’s not overlook evaporative humidifiers!

They pull down natural evaporation principles – taking room-temperature water from its tank, absorbing it into its wick filter, and then blowing out moisture-laden air back into the room.

Relax knowing this self-regulating system stops once an ideal humidity level is reached – preventing undue condensation on your plant babes!

Where to Place Humidifier for Plants – FAQs

How often should a humidifier be used for plants?

Your plants will love you if you use a humidifier every day. However, each plant is unique and may require different humidity levels. Monitor your plants; if they seem happy and healthy, you’re doing a great job!

What type of humidifier is best for indoor plants?

Ultrasonic humidifiers are an excellent choice for indoor plants. They produce a cool mist that can increase the humidity without making the room uncomfortably hot or damp.

Where in a room should a humidifier be located for plant growth?

Place your humidifier close to your plants, but not too close. A distance of about 3-5 feet should be OK. This will allow the humid air to reach the plants without causing water damage.

Should a humidifier be used for plants during winter?

Yes indeed! Indoor heating can dry out the air, which is not ideal for your green friends. A humidifier can help maintain the humidity levels your plants crave during these dryer months.

Is a cool mist or warm mist humidifier better for plants?

Cool mist humidifiers are generally better for plants. They increase humidity without raising the room temperature, which can be helpful if you have plants that thrive in more excellent conditions. However, this will also depend on the type of plants you have in your indoor collection.

How long should a plant humidifier be left on daily?

This can depend on how dry your home is, but running the humidifier for 2-4 hours daily should suffice. Remember, some trial and error might be needed until you find what works best for your green pals.

References Used

  • Transpiration. (2023, July 10). In Wikipedia.