Categories: Outdoor

How to Get Rid of Spider Mites

Published by
James marcus

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.

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.

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.

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.

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 Spider Mites

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.

Pest Gnome writer Raven Wisdom updated this article.

Main Image Credit: Mokkie / Wikimedia Commons / CC BY-SA 3.0

James marcus

Garden Courte is a blog written by [James Marcus], a passionate gardener and writer. She has been gardening for over 20 years and has a deep understanding of plants and how to care for them. In her blog, she shares her knowledge and experience with others, providing tips and advice on gardening, plant care, and more.

Share
Published by
James marcus

Recent Posts

DIY Turmeric Scrub for Hyperpigmentation

For all my beauties with dark inner thighs, armpits, bikini area and spots, etc, this…

1 year ago

Top 15 Cook Interview Questions and Answers

Are you a passionate cook aspiring to embark on a rewarding culinary journey? Whether you're…

1 year ago

What Color Walls Go With Grey Kitchen Cabinets [Schemes]

Discover the perfect wall colors to complement your grey kitchen cabinets, creating a harmonious and…

1 year ago

10×10 Kitchen Remodel Cost: Everything You Need to Know

Generally, a 10×10 kitchen remodel ranges from $15,000 to $45,000, but several factors could cause…

1 year ago

How Much Do Quartz Countertops Cost?

Sleek and durable, quartz countertops are the latest trend in kitchen and bathroom renovation. Comparable…

1 year ago

Australian IKEA Kitchen Design & Installation Costs

IKEA kitchens are designed to be as simple as possible to assemble and install yourself.…

1 year ago