Plant Pests & Diseases

33 articles tagged "Plant Pests & Diseases".

Brown Leaf Tips on Houseplants: 4 Common Causes

Plant Pests & Diseases

Brown Leaf Tips on Houseplants: 4 Common Causes

Discover why houseplant leaf tips turn brown from low humidity, tap water, watering mistakes and salt buildup, with fixes: distilled water and humidity trays.

By GreenNest Editors · 2026-07-13

How to Deal With Aphids

Plant Pests & Diseases

How to Deal With Aphids

Aphids: what it looks like, why it happens, and the fix. Clusters of soft green/yellow bugs on new growth; sticky leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Edema

Plant Pests & Diseases

How to Deal With Edema

Edema: what it looks like, why it happens, and the fix. Blistered, corky, or watery bumps on the undersides of leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Etiolation (Too Little Light)

Plant Pests & Diseases

How to Deal With Etiolation (Too Little Light)

Etiolation (Too Little Light): what it looks like, why it happens, and the fix. Pale, stretched, leaning growth with wide gaps between leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Fungus Gnats

Plant Pests & Diseases

How to Deal With Fungus Gnats

Fungus Gnats: what it looks like, why it happens, and the fix. Tiny black flies hovering over the soil surface.

By GreenNest Editors · 2026-07-13

How to Deal With Leaf Spot

Plant Pests & Diseases

How to Deal With Leaf Spot

Leaf Spot: what it looks like, why it happens, and the fix. Brown or black spots with yellow halos on leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Mealybugs

Plant Pests & Diseases

How to Deal With Mealybugs

Mealybugs: what it looks like, why it happens, and the fix. White, cottony clumps in leaf joints and at the base of leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Over-fertilisation

Plant Pests & Diseases

How to Deal With Over-fertilisation

Over-fertilisation: what it looks like, why it happens, and the fix. Crispy brown leaf edges and a white crust on the soil.

By GreenNest Editors · 2026-07-13

How to Deal With Powdery Mildew

Plant Pests & Diseases

How to Deal With Powdery Mildew

Powdery Mildew: what it looks like, why it happens, and the fix. White powdery coating on leaves and stems.

By GreenNest Editors · 2026-07-13

How to Deal With Root Rot

Plant Pests & Diseases

How to Deal With Root Rot

Root Rot: what it looks like, why it happens, and the fix. Yellow, wilting leaves in wet soil; black, mushy roots and a sour smell.

By GreenNest Editors · 2026-07-13

How to Deal With Scale Insects

Plant Pests & Diseases

How to Deal With Scale Insects

Scale Insects: what it looks like, why it happens, and the fix. Brown, dome-shaped bumps stuck to stems and leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Spider Mites

Plant Pests & Diseases

How to Deal With Spider Mites

Spider Mites: what it looks like, why it happens, and the fix. Fine webbing and stippled, bronzed, or speckled leaves.

By GreenNest Editors · 2026-07-13

How to Deal With Sunburn

Plant Pests & Diseases

How to Deal With Sunburn

Sunburn: what it looks like, why it happens, and the fix. Bleached white or brown scorched patches, often on the side facing the window.

By GreenNest Editors · 2026-07-13

How to Deal With Thrips

Plant Pests & Diseases

How to Deal With Thrips

Thrips: what it looks like, why it happens, and the fix. Silvery streaks and tiny black droppings on leaves; distorted new growth.

By GreenNest Editors · 2026-07-13

How to Deal With Whitefly

Plant Pests & Diseases

How to Deal With Whitefly

Whitefly: what it looks like, why it happens, and the fix. Tiny white moth-like insects that fly up when disturbed.

By GreenNest Editors · 2026-07-13

How to Eliminate Fungus Gnats for Good

Plant Pests & Diseases

How to Eliminate Fungus Gnats for Good

Eliminate fungus gnats with sticky traps, hydrogen peroxide drenches, and bottom watering. A GreenNest guide to breaking the gnat life cycle in houseplants.

By GreenNest Editors · 2026-07-13

Fungus Gnats vs Spider Mites

Plant Pests & Diseases

Fungus Gnats vs Spider Mites

Tell these two common pests apart and pick the right fix for each.

By GreenNest Editors · 2026-07-13

How to Get Rid of Mealybugs on Houseplants

Plant Pests & Diseases

How to Get Rid of Mealybugs on Houseplants

Learn how to get rid of mealybugs with isolation, alcohol swabs, neem oil, and insecticidal soap. A complete GreenNest guide to save your infested houseplants.

By GreenNest Editors · 2026-07-13

Identifying Plant Pests Early

Plant Pests & Diseases

Identifying Plant Pests Early

The first tiny signs that tell you a pest has arrived -- before it spreads.

By GreenNest Editors · 2026-07-13

Neem Oil: The Backyard Pest Fix

Plant Pests & Diseases

Neem Oil: The Backyard Pest Fix

How to mix and use neem oil safely for houseplant pests, and why it is a beginner's best friend.

By GreenNest Editors · 2026-07-13

Pet-Safe Pest Control Indoors

Plant Pests & Diseases

Pet-Safe Pest Control Indoors

How to deal with houseplant pests when cats and dogs share your home.

By GreenNest Editors · 2026-07-13

Powdery Mildew on Houseplants

Plant Pests & Diseases

Powdery Mildew on Houseplants

The white dust on leaves, why it appears, and how to clear it.

By GreenNest Editors · 2026-07-13

How to Quarantine New Plants (and Why It Saves Your Collection)

Plant Pests & Diseases

How to Quarantine New Plants (and Why It Saves Your Collection)

A two-week isolation routine that stops pests before they spread to your healthy plants.

By GreenNest Editors · 2026-07-13

Root Rot First Aid: Saving a Soggy Plant

Plant Pests & Diseases

Root Rot First Aid: Saving a Soggy Plant

The step-by-step rescue when leaves wilt in wet soil and roots have gone mushy.

By GreenNest Editors · 2026-07-13

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