Pests & Diseases
Early Blight vs. Late Blight on Tomatoes: How to Tell
Early blight vs. late blight on tomato plants: compare leaf spots, speed, weather and fruit symptoms side by side, then decide whether to prune or pull.
September 13, 2026
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Pests & Diseases
Diagnose it, then fix it. · 20 guides
Pests & Diseases
How to Get Rid of Cabbage Worms on Broccoli, Kale, and Cabbage
Cabbage worms are the green caterpillars of a white butterfly. Learn the life cycle, tell them from loopers, and control them with row cover, hand-picking and Bt.
September 13, 2026
Pests & Diseases
How to Keep Squirrels and Chipmunks Out of Garden Pots
Stop squirrels and chipmunks digging in pots with wire mesh, a rock layer, deeper bulb planting and resistant bulbs. Methods ranked, with extension sources.
September 13, 2026
Buying guide Pests & Diseases
Neem Oil vs. Horticultural Oil: Are They the Same?
Is neem oil a horticultural oil? Yes, one plant-derived kind. See how neem and mineral horticultural oil differ, which to use by pest and season, and safe spray temperatures.
September 13, 2026
Pests & Diseases
How to Get Rid of Japanese Beetles Without Traps That Backfire
Bag traps draw in more Japanese beetles than they catch. Here is what works instead: hand-picking at dawn, netting, plant choice and a realistic plan for lawn grubs.
September 10, 2026
Pests & Diseases
Tomato Hornworms: Where They Come From and How to Get Rid of Them
Tomato worms hatch from eggs laid by a large gray moth. Learn to spot the eggs, frass and caterpillars, tell the two species apart, and get rid of hornworms.
September 10, 2026
Pests & Diseases
Fire Blight in Fruit Trees: Spotting and Stopping an Outbreak
How to recognize fire blight on apple and pear trees, how far below the damage to cut in winter and summer, how to clean tools, and which varieties resist it.
September 9, 2026
Buying guide Pests & Diseases
Pet-Safe Pesticides for a Garden With Dogs, Cats or Chickens
Which garden pesticides are lowest in risk for dogs, cats and backyard chickens, which active ingredients to keep away from animals, and how to apply any of them safely.
September 9, 2026
Pests & Diseases
Holes in Leaves: A Chart to Match the Damage to the Pest
What causes holes in plant leaves? Use this identification chart to match tiny shot holes, lacy leaves, ragged holes and edge cuts to the pest or disease.
August 6, 2026
Buying guide Pests & Diseases
Iron Phosphate Slug Bait: How It Works and What to Buy
How iron phosphate slug and snail bait works, how fast it kills, label rates per 1,000 square feet, pet safety, and how it compares with metaldehyde and iron EDTA.
July 12, 2026
Buying guide Pests & Diseases
Best Organic Fungicide for Plants: 6 Types Compared
The best organic fungicide depends on the disease: copper for bacterial spots and blights, sulfur or oil for powdery mildew. Compare six types and their limits.
July 12, 2026
Buying guide Pests & Diseases
Best Row Covers for Keeping Pests Off Vegetable Beds
For insect protection, pick the lightest row cover (0.45 oz per square yard) or fine insect netting. Compare grades, timing, hoops and which pests each stops.
July 12, 2026