How to get rid of tiny spiders on plants

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Being attacked by something you can’t see is the stuff of nightmares, but we’re not talking about ghosts. Spider mites can launch swift assaults against your house plants, shrubs, flowers, garden fruits and vegetables, and trees. But don’t worry, we’ve got solid tips on how to get rid of spider mites and say goodbye to this invisible foe.

Since spider mites are practically invisible, it’s not easy to get rid of them. But you can fight them with biological control methods, natural home remedies, or chemical pesticides.

Worried about Spider Mites?

See what it might cost to save the hassle and have a professional treat the issue.

In this article:

  • What are Spider Mites?
  • How To Identify Spider Mite Damage
  • How to Get Rid of Spider Mites Naturally
  • How to Get Rid of Spider Mites Chemically
  • How to Keep Spider Mites Off Plants
  • FAQ About How to Get Rid of Spider Mites

What are Spider Mites?

Cousins to ticks, spiders, harvestmen (aka daddy longlegs), and scorpions, spider mites are tiny arachnids, rather than insects. They’re about the size of a single grain of sugar, so these oval-shaped, eight-legged critters are tough to spot without the aid of a microscope or magnifying glass.

Active during the warm, dry conditions of summer, spider mites can move from plant to plant, or outside to inside, by hitching rides on people and other plants.

How To Identify Spider Mite Damage

Telltale signs of an infestation include white or yellow specks on leaves, webbing on houseplants, and dropping leaves. Other pests can produce similar problems, so make sure you’re dealing with spider mites before planning your eviction campaign.

How can you tell if you have a spider mites problem? The University of Minnesota Extension recommends holding a sheet of white paper or a paper plate under leaves where you suspect an infestation. Then, tap the leaves, and if mites are there, you’ll see little specks fall onto the paper and scurry around.

Once you identify spider mites, it’s time to get rid of them.

Warning – Spider Mites are Tough to Get Rid of – Consider Hiring a Professional

Thumbtack is a free service that connects you with only the best local professionals – we highly recommend it to find a local expert in dealing with spider mites.


How to Get Rid of Spider Mites Naturally

1. Biological controls

These natural predators keep spider mite populations in check with:

  • Lacewings 
  • Thrips
  • Ladybugs
  • Predatory mites (Phytoseiulus persimilis) 

To encourage these beneficial insects to stick around, avoid using pesticides. Mulch flower and garden beds, and regularly water your plants and the lawn.

You can order live predatory mites and insects online for your indoor plants. Release them into the pots. These predatory mites and insects can consume hundreds of mites a day and don’t pose any danger to plants, people, or pets.

You can order live predatory mites and insects online for your indoor plants. Release them into the pots. These predatory mites and insects can consume hundreds of mites a day and don’t pose any danger to plants, people, or pets.

2. Essential oils

A 2017 study found essential oils work well. The most effective at killing two-spotted spider mite eggs and adults are:

  • Chamomile
  • Coriander
  • Spearmint
  • Rosemary

To make your own DIY spider mite spray, fill a spray bottle with water and a few drops of your chosen oil from the recommended list, and apply it to the leaves of your affected plants.

Neem oil sprays also work against spider mites by suffocating them.

Neem oil sprays also work against spider mites by suffocating them.

3. Hot peppers

Extracts from peppers were tested for toxicity against spider mites. These peppers killed about 45% of adult spider mites: 

  • Bell peppers
  • Jalapenos
  • Chile
  • Cayenne peppers 

Other pepper varieties, such as lemon drop peppers and Bishop’s crown peppers, also repel spider mites.

You can buy hot pepper repellent online, in stores, or, you can make your own pepper repellent.

4. Other home remedies

  • Dish soap: The Oregon State University Extension service recommends mixing 3 tablespoons of dish soap with a gallon of water to kill spider mites. Fill a spray bottle and spray the soap solution on infested plant leaves weekly, as needed.
  • Rubbing alcohol: The rubbing alcohol you have around the house also can kill spider mites. Soak cotton balls in rubbing alcohol and wipe across the foliage of infested houseplants. Let either the dish soap or rubbing alcohol sit on the plants for a few hours, and then rinse the leaves thoroughly with water.
  • Spraying water from a garden hose also will help wash away any spider mites that may have avoided the effects of homemade repellents. Washing away spider mites is a temporary solution, though, as these plant pests may return after each rinse.

How to Get Rid of Spider Mites Chemically

Spider mite problems may resolve on their own, especially if their numbers are low and your yard attracts their natural predators. But if other DIY methods haven’t worked for you, control spider mites with chemical pesticides.

1.  Insecticidal soap or horticultural oil

While you generally should avoid using pesticides because they can kill beneficial insects, there’s a version that will eliminate spider mites and nothing else. Only effective on contact with adult spider mites, insecticidal soap or horticultural oil should cover both sides of leaves.

Note: If your plants are stressed from drought or outside temperatures are high, do not use insecticidal soap or horticultural oil. Check the labels of these products to see which plants can safely withstand application. Some plants are too sensitive to the ingredients.

Insecticidal soap (or horticultural oil) will most likely work best for indoor plants, where the environment is climate-controlled.

2. Diatomaceous earth

Diatomaceous earth, which is made from fossils of aquatic organisms, is an organic pesticide that is lethal to arachnids and insects but non-toxic to humans. Sprinkle the food-grade version on infected plants and soil. It will dehydrate the spider mites’ exoskeletons, killing them.

3. Other pesticides

Traditional pesticides, like the ones containing pyrethroids (components of the chrysanthemum flower), do not work on spider mites, according to the University of California‘s integrated pest management office. Instead, these types of insecticides can harm the natural predators of spider mites, allowing the mites to continue reproducing.

How to Keep Spider Mites Off Plants

Preventing spider mites from attacking your plants in the first place is the goal. Before introducing any new houseplants into your home, use the white paper test mentioned earlier to check for signs of the mites. If mites are present, do not purchase that plant.

Once home (with an uninfected plant), don’t display your new greenery near open windows or heat vents. Spider mites could enter from outside, and they thrive in warm, dry places. 

Keeping dust on plants to a minimum also can help keep spider mites away. Simply wipe plant leaves with a damp cloth weekly.

Regular watering of your plants can repel spider mites, as these pests prefer dryness.

FAQ About How to Get Rid of Spider Mites

How Long Does it Take to Get Rid of Spider Mites?

If your infestation isn’t severe, depending on the spider mite control method, it will probably take a few weeks to completely get rid of the mites.

If you opt for sprays, apply them weekly until the problem is under control. If you use predatory insects, your spider mite problem may disappear more quickly, as these insects can devour hundreds of mites a day.

What Types of Plants do Spider Mites Like?

Spider mites feed on the cells of hundreds of varieties of plants. They like outdoor plants, such as melons, strawberries, tomatoes, and fruit trees. Houseplants that spider mites favor include ornamental flowers and shrubs.

Should I Throw Away a Plant with Spider Mites?

If these houseplant pests are out of control, you can bag up the entire plant and toss it out with the trash. It’s a quick, permanent way to get rid of spider mites. Getting rid of the infested plant also prevents the mites from transferring to another one of your indoor plants.

Despite their short life cycle, they reproduce rapidly, so the earlier you can control them, the better. At just 5 days old, females start laying eggs, depositing a few hundred of them during her three to four-week lifetime. These eggs only take about 72 hours to hatch.

Are Spider Mites Dangerous?

Spider mites are not harmful to humans, but they are potentially lethal to plant life.

What’s the Most Common Type of Spider Mite?

Spider mites aren’t actually insects, they are a type of arachnid. A few common species of spider mites include:

• Southern red spider mite

• Carmine spider mite

• Strawberry spider mite

• Spruce spider mite

Depending on the type, other spider mites range in color from red to green to purple to black to translucent.

Most common of all is the two-spotted spider mite. Yellowish-orange with one dark spot on both sides of its body, these mites live together in colonies. They cling onto the undersides of leaves and feed off the plant’s chlorophyll.

When to Call a Pest Control Expert

Severe infestations may require help from pest control professionals. These pros will come to your home, identify the pests, assess mite damage, and develop a plan to get rid of the spider mites.

Using integrated pest management, these specialists will not only exterminate your spider mite problem but also monitor the situation and help educate you on ways you can prevent a recurrence.

Now, instead of nightmares, your dreams of a pest-free plant collection can become a reality, and you can say goodbye to these ghost-like pests for good.

LawnStarter writer Raven Wisdom updated this article.

How to get rid of tiny spiders on plants

Andréa Butler

Descendant of the Fulani tribe, Gettysburg-obsessed Marine Corps brat, and lover of all things writing and editing, Andréa Butler launched Sesi magazine and has penned articles for sites, such as LivingSocial, Talbot Digital, Xickle, Culturs magazine, and Rachel Ray. Andréa holds a B.A. in English from the University of North Carolina at Greensboro and an M.A. in magazine journalism from Kent State University.

What is the fastest way to get rid of spider mites on plants?

Soak a cloth in a solution of 1:1 rubbing alcohol and tap water. Carefully wipe down each leaf, including underneath, and the stem. Next, add the solution to a spray bottle and generously wet the entire plant, allowing it to air dry. Another option is to mix 16 oz of warm water with a ½ tsp liquid dish washing soap.

What home remedy kills spider mites on houseplants?

Dish soap solution: Using a mixture of 1 liter of warm water and 1 teaspoon of liquid dish soap, either mix the solution well in a spray bottle, or mix it into a bucket and wash the plant with a cloth or sponge. Re-apply regularly for best results.

How do you get rid of spider mites permanently?

Kill spider mites by combining a mixture of 1 cup of rubbing alcohol and 4 cups of water, then spray the solution on your plants. Cover the stems, flowers, and foliage thoroughly. Rubbing alcohol kills spider mites by dehydrating them.

Why does my plant have spider mites?

In indoor growing areas, spider mites are more likely to become a problem on underwatered plants. Over-applying nutrients can also make your plants more susceptible to spider mites. If you've applied too much nitrogen, your plants are more likely to be attacked by spider mites and other pests.