The Ultimate Guide to Identifying and Eliminating Common Houseplant Pests

Q: "Where do houseplant pests even come from?"

"The #1 source is an infested new plant brought home from a store or nursery. They can also come in through open windows, on cut flowers, or even in a bag of contaminated potting soil. This is why quarantining new plants is so important."

Q: "What is the best all-purpose pest spray to have on hand?"

"A high-quality, cold-pressed Neem Oil and a pre-made Insecticidal Soap are the two best things to have. Neem oil is a great preventative and disruptor, while insecticidal soap is excellent for knocking down active infestations of soft-bodied pests."

Q: "Is it safe to use chemical pesticides indoors?"

"You should always start with safer, organic options first. If a severe infestation requires a chemical pesticide, it is highly recommended to take the plant outdoors for treatment and allow it to dry completely before bringing it back inside. Always follow the product\u0026rsquo;s safety labels."

Q: "How long should I quarantine a new plant?"

"A quarantine period of at least 4 weeks is ideal. This gives enough time for any dormant eggs to hatch and for you to spot an emerging pest population before it has a chance to spread to your collection."

Marina Remeslo

Found Bugs? Don't Panic. Start Here.

Hello, plant friends! Marina here. Finding bugs crawling on your beloved plants is stressful, but I promise, nearly every pest problem is fixable. The key is to correctly identify your unwelcome guest so you can use the right battle plan.

I’ve created this complete Pest Library to be your one-stop resource. Use the quick diagnostic tool below to get an idea of what you’re dealing with, then dive into the full guide for a step-by-step treatment plan. We’ll get through this together!

🔎 Quick Pest Identification Chart

If you see…	It’s likely…
Fine, silky webbing under leaves	👉 Spider Mites
Tiny, white, cotton-like fluff in crevices	👉 Mealybugs
Hard, unmoving brown bumps on stems	👉 Scale Insects
Tiny black flies buzzing around the soil	👉 Fungus Gnats
Clouds of tiny, white, moth-like insects	👉 Whiteflies
Small green/black bugs on new leaves	👉 Aphids
Silvery leaf damage with tiny black dots	👉 Thrips
Slime trails and large, ragged holes in leaves	👉 Slugs & Snails
A struggling plant with no visible bugs	👉 Root Mealybugs (Check the soil!)

🦟 Common Sap-Sucking Pests

The Unseen Energy Drainers

Sap-suckers are some of the most common houseplant pests. They use tiny, piercing mouthparts to drain the life from your plant’s leaves and stems, often leaving behind a sticky residue called “honeydew.” This constant feeding causes stippling, yellowing, and distorted growth. Identifying them early is key to preventing major damage.

Spider Mites

Seeing fine webbing and tiny dots on your plant leaves? Learn how to identify, eliminate, and prevent spider mites with this definitive step-by-step guide.

Mealybugs

Find white, fuzzy pests on your plants? Learn how to identify, eliminate, and prevent mealybugs with this complete step-by-step guide.

How to Identify and Get Rid of Scale on Houseplants: A Complete Guide

Scale Insects

Got weird bumps on your plant stems? Learn to identify, eliminate, and prevent stubborn scale insects with this complete step-by-step guide.

Aphids

Learn to identify, prevent, and eliminate aphids from your houseplants with this comprehensive guide.

Thrips

Seeing silvery damage and tiny black pests on your leaves? Learn how to identify, eliminate, and prevent a stubborn thrips infestation with this step-by-step guide.

Whiteflies

Seeing a cloud of tiny white bugs fly up from your plant? Learn how to identify, eliminate, and prevent stubborn whiteflies with this step-by-step guide.

🌱 Soil & Root Pests

The Hidden Enemies

What makes these pests tricky is that the damage happens out of sight, below the soil surface. If your plant is struggling with no visible bugs on the leaves, the problem may lie in the pot itself. From annoying gnats flying around the soil to mealybugs feeding directly on the roots, these guides will help you address the issue at its source.

Fungus Gnats

Annoying black flies buzzing around your plants? Learn to identify, treat, and prevent fungus gnats for good with this step-by-step guide.

Root Mealybugs

Is your plant struggling with no visible pests? Learn to identify and eliminate hidden root mealybugs with this definitive, step-by-step guide.

🐛 Leaf-Chewing Pests

The Obvious Attackers

Unlike the subtle damage from sap-suckers, these pests are not shy. They physically eat parts of your plant, leaving behind large, ragged holes and other telltale signs like slime trails or droppings. The good news is they are often larger and easier to spot and remove manually.

Slugs & Snails

Discovering slime trails and chewed leaves? Learn to identify, eliminate, and prevent slugs and snails on your indoor and outdoor potted plants.

Caterpillars

Finding big holes and hungry bugs on your leaves? Learn how to identify, remove, and prevent caterpillars from eating your houseplants with this guide.

🛡️ How to Keep Pests Away for Good

The best treatment is always prevention. Follow these rules to keep your collection safe.

Quarantine Every New Plant: Keep new plants in a separate room for at least 4 weeks. This is the #1 way to prevent pests from entering your home.
Inspect Regularly: Make it a habit to look over your plants, especially under the leaves, each time you water. Catching an infestation early is key.
Keep Plants Healthy: A strong, healthy plant is less susceptible to pests. Providing proper light, water, and nutrients is your best line of defense.
Wipe Leaves Down: Regularly cleaning your plant’s leaves with a damp cloth removes dust and physically dislodges any stray pests or eggs.

❓ Frequently Asked Questions

Where do houseplant pests even come from?

The #1 source is an infested new plant brought home from a store or nursery. They can also come in through open windows, on cut flowers, or even in a bag of contaminated potting soil. This is why quarantining new plants is so important.

What is the best all-purpose pest spray to have on hand?

A high-quality, cold-pressed Neem Oil and a pre-made Insecticidal Soap are the two best things to have. Neem oil is a great preventative and disruptor, while insecticidal soap is excellent for knocking down active infestations of soft-bodied pests.

Is it safe to use chemical pesticides indoors?

You should always start with safer, organic options first. If a severe infestation requires a chemical pesticide, it is highly recommended to take the plant outdoors for treatment and allow it to dry completely before bringing it back inside. Always follow the product’s safety labels.

How long should I quarantine a new plant?

A quarantine period of at least 4 weeks is ideal. This gives enough time for any dormant eggs to hatch and for you to spot an emerging pest population before it has a chance to spread to your collection.