Plant Pests & Diseases

Aphids, mealybugs, fungus gnats, and root rot are the four horsemen of houseplant heartbreak. Here is how to identify each issue fast and fix it before it spreads.

Saving a Plant After a Pest Outbreak

Plant Pests & Diseases

Saving a Plant After a Pest Outbreak

Step-by-step recovery: from isolation and treatment to helping the plant regrow.

By GreenNest Editors · 2026-07-13

How to Save a Plant With Root Rot

Plant Pests & Diseases

How to Save a Plant With Root Rot

Save a plant with root rot by unpotting, trimming mushy roots, and repotting in gritty soil. A GreenNest step-by-step recovery guide for overwatered plants.

By GreenNest Editors · 2026-07-13

Scale Insects on Houseplants: Identification and Treatment

Plant Pests & Diseases

Scale Insects on Houseplants: Identification and Treatment

Learn how to identify scale insects on houseplants and treat them with alcohol swabs, horticultural oil, neem oil, and systemic granules. GreenNest guide.

By GreenNest Editors · 2026-07-13

Spider Mites on Houseplants: ID and Treatment

Plant Pests & Diseases

Spider Mites on Houseplants: ID and Treatment

Identify spider mites by fine webbing and stippled leaves, then treat with neem oil, humidity, and quarantine. A GreenNest guide to saving infested plants.

By GreenNest Editors · 2026-07-13

Sunburn vs Pest Damage: Telling Them Apart

Plant Pests & Diseases

Sunburn vs Pest Damage: Telling Them Apart

How to read scorched leaves versus pest feeding so you treat the right problem.

By GreenNest Editors · 2026-07-13

How to Treat Powdery Mildew on Plants

Plant Pests & Diseases

How to Treat Powdery Mildew on Plants

Treat powdery mildew with potassium bicarbonate, milk spray, or neem oil. A GreenNest guide to identifying and preventing white fungal coating on houseplants.

By GreenNest Editors · 2026-07-13

When to Throw Away a Plant (and When Not To)

Plant Pests & Diseases

When to Throw Away a Plant (and When Not To)

An honest guide to giving up gracefully versus saving a plant worth saving.

By GreenNest Editors · 2026-07-13

Whiteflies on Houseplants: How to Get Rid of Them

Plant Pests & Diseases

Whiteflies on Houseplants: How to Get Rid of Them

Learn how to get rid of whiteflies on houseplants using yellow sticky traps, neem oil, vacuuming, and isolation. A complete GreenNest guide to break the cycle.

By GreenNest Editors · 2026-07-13

Why Are My Leaves Turning Yellow? (Non-Pest Causes)

Plant Pests & Diseases

Why Are My Leaves Turning Yellow? (Non-Pest Causes)

The most common non-pest reasons for yellow leaves, and the fix for each.

By GreenNest Editors · 2026-07-13

Recommended for Plant Pests & Diseases