AGreenNestPlant 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.
Plant Pests & Diseases
Bacterial Blight: Spots, Smell & How to Stop It
Bacterial blight and leaf spot cause foul-smelling water-soaked spots with yellow halos. Learn to prune, dry leaves, and treat with copper soap to save plants.
Plant Pests & Diseases
Caterpillars on Plants: Chewed Leaves & Quick Fixes
Caterpillars and leaf-chewing larvae leave holes and frass on indoor and patio plants. Learn to hand-pick, use neem oil, Bt, and insecticidal soap to stop them.
Plant Pests & Diseases
Damping-Off in Seedlings: Causes & Easy Prevention
Damping-off makes seedlings collapse at the soil line from Pythium and fungi. Learn to use sterile mix, bottom water, and cinnamon to prevent seedling killer.
Plant Pests & Diseases
Rust Fungus on Houseplants: ID, Treatment & Prevention
Orange and yellow rust fungus pustules on houseplant leaves? Learn what rust looks like, why it spreads, and how to treat and prevent it with neem oil.
Plant Pests & Diseases
Houseplant Pests: The Complete Identification & Treatment Manual
Spot, name, and kill every common houseplant pest — with a fast identification table, safe treatment for each, and the routine that keeps them from coming back.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
Plant Pests & Diseases
How to Eliminate Fungus Gnats for Good
Eliminate fungus gnats with sticky traps, hydrogen peroxide drenches, and bottom watering. A AGreenNest guide to breaking the gnat life cycle in houseplants.
Plant Pests & Diseases
Fungus Gnats vs Spider Mites
Tell these two common pests apart and pick the right fix for each.
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 AGreenNest guide to save your infested houseplants.
Plant Pests & Diseases
Identifying Plant Pests Early
The first tiny signs that tell you a pest has arrived -- before it spreads.