How To Get Rid Of Spider Mites On Indoor Plants, For Good!

There is nothing more frustrating than finding a spider mite infestation on one of your beloved indoor plants. They are one of the most destructive pests, so it’s very important to get rid of them as quickly as possible.

The good news is that they’re pretty easy to control using natural treatment methods, and you’ll be able to eradicate them quickly.

In this detailed guide, I’ll show you all you need to know about getting rid of spider mites on your plants for good, and how to prevent them from ever coming back.

Table of Contents

What Are Spider Mites?

Spider mites are tiny bugs that attack many different types of plants, and they can be a major problem indoors. Though they are arachnids, just like ticks and spiders, they only feed on plant cells.

Since they’re so small, you probably won’t notice them until their population explodes. By then, there can be hundreds of spider mites in a single colony, and they cause significant damage in a very short time.

These annoying pests thrive in warm, dry conditions. So our homes are the perfect breeding grounds, especially during the winter.

Tiny white spider mites crawling around on their webbing

How To Identify Them

Spider mites are easy to identify, and finding their webbing on a plant is a dead giveaway. Take a closer look at the webs and you’ll see these tiny creatures crawling around on them, yuck!

Oftentimes these mites look like tiny white spiders, but they can also be tan, red, or black.

They are sneaky little suckers, and tend to start their webs on the underside of leaves. So that’s why you probably won’t notice them right away.

Rather than seeing bugs, you’ll probably spot the webs on your houseplant first. Or the leaves may just look dull and dusty, or appear dried out as if you forgot to water.

Their Life Cycle

At a high level, there are 4 stages to the spider mite life cycle: egg, larva, nymph, and adult. They mature very quickly, and can become full grown about a week after they hatch.

It only takes a few more weeks for an adult female to lay hundreds of eggs, and for them to start hatching.

So spider mites can multiply exponentially over a very short period of time. And, in the right conditions, their population can double every couple of weeks. Eek!

Where Do Spider Mites Come From?

The tricky part about spider mites is that they can come from anywhere, and you’ll probably never know exactly how they got on your indoor plants. But, here are a few common sources:

Unknowingly buying an infested plant
Repotting plants with unsterile potting soil
Moving your houseplants outside for the summer
Bringing flowers and vegetables inside from your garden
Through open doors or window screens

Related Post: Where Do Houseplant Pests Come From?

Spider Mite Damage On Houseplants

Spider mites cause damage to plants by sucking the sap out of the leaves, making them look discolored, speckled, curled, or dried up. The infested leaves will shrivel, die, and eventually drop off.

They are one of the most destructive pests, and they can heavily damage or even kill a houseplant in a very short period of time.

So it’s very important to take immediate action to get rid of spider mites as soon as you discover them.

How To Get Rid Of Spider Mites On Houseplants

Once you discover an infestation, it’s crucial to act fast to get rid of it before it spreads to the rest of your plants.

The first thing you should do is contain the problem immediately. So quarantine the infested houseplant and inspect all of the surrounding ones for spider mites. Then you should clean the plant.

To do that, I bring mine to the sink or bathtub and wash the leaves with either insecticidal soap or a mild liquid one mixed with water. Be sure to wash the undersides of the leaves too, and rinse the plant well afterward.

Spider mites and their webbing between two houseplant leaves

Spider Mite Treatment Methods

I highly recommend using only natural and organic treatment methods to get rid of the spider mites on your plants, like the ones I have listed below. Otherwise these pests can develop a resistance to chemical pesticides in a short time.

Also keep in mind that sprays, even organic ones, can damage sensitive leaves. So you should always test them on a few leaves before treating the whole plant.

Related Post: Natural Pest Control For Houseplants

Insecticide Soap

You can buy an organic insecticidal soap, or mix up a batch of my homemade spider mite spray. Here’s my recipe:

1 teaspoon of mild liquid soap
1 liter tepid water

Mix the ingredients in a spray bottle and then use it to wash the leaves. Either of these options work very well to kill the bugs on contact, but they don’t have any type of residual effect.

Neem Oil

Neem oil is a natural pesticide, and it’s very effective to control spider mite infestations long term. It has a residual effect, so it also works to prevent them from coming back.

I like to buy it in a concentrate and make my own spray so I have complete control of the ingredients. Here’s my simple recipe:

1 ½ teaspoons of pure neem oil concentrate
1 teaspoon of mild liquid soap
1 liter of tepid water

While neem oil does kill spider mites, it can take some time to completely get rid of all of the future generations. So you have to be persistent, and treat your plant every few weeks until all signs of the bugs are gone.

Related Post: How To Use Neem Oil On Plants

Spraying neem oil on an indoor plant that's infested with spider mites — Spraying neem oil on an indoor plant that’s infested with spider mites

Misting & Humidity

Since spider mites thrive in dry conditions, keeping the air around your indoor plants humid is one of the best prevention methods. There are a few easy ways to do this:

Mist the leaves regularly
Keep a container of water next to the plant
Place the pot on a pebble tray filled with water
Run a humidifier in the room or near your houseplants
Place your plants next to the kitchen sink or in a sunny bathroom

If it’s really dry in your house, then I recommend getting an inexpensive indoor humidity monitor so you can monitor it.

Misting a houseplant with water to prevent spider mites

Pruning

In addition to washing and spraying your houseplant, you can trim off infested leaves and throw them into the garbage to get rid of even more of the spider mites and eggs.

Never cut all of the leaves off though, just remove the most heavily damaged ones. Then bring the trash outside to get the bugs out of your house.

How To Prevent Spider Mites From Ever Coming Back

Though spider mites can be very persistent, especially on the houseplants they love the best, it’s pretty easy to prevent them from coming back. Here are some tips:

Keep your plants healthy – When they’re healthy, they aren’t as susceptible to major infestations as sick ones are. Learn how to properly care for your indoor plants here.

Maintain adequate soil moisture – Well-hydrated plants are less likely to become infested. Here’s my guide for how to water houseplants the right way.

Increase the humidity – Spider mites thrive best in a dry environment. So mist them or run a humidifier nearby.

Clean the leaves – You can use neem oil as a leaf polish, or wash the leaves with insecticidal soap to prevent an outbreak.

Debug them before bringing them inside – If you move any of them outdoors for the summer, be sure to debug all of your plants before bringing them back indoors.

Check your houseplants – Regularly inspect the leaves for any signs of pests so you can catch them before they get out of control. I do this every time I water.

Though dealing with recurring infestations can be extremely frustrating, it’s not difficult to eliminate spider mites from your indoor plants. The keys are to treat them immediately, be persistent in your fight, and strive to maintain healthy houseplants.

If you’re sick of battling bugs, then my Houseplant Pest Control eBook is for you. This eBook is jam-packed with information about how to get rid of bugs on indoor plants using organic methods. It shows you how to identify common pests so you can quickly and easily get rid of them, and prevent recurring infestations. Download your copy today!

More About Houseplant Pest Control

Share your tips for getting rid of spider mites on houseplants in the comments below.