Pests & Diseases
Blossom End Rot: The Real Cause and How to Stop It
Blossom end rot is a calcium shortage inside the fruit, usually set off by uneven watering. See the causes, soil pH targets and the fixes for tomatoes and peppers.
July 12, 2026
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Pests & Diseases
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Buying guide Pests & Diseases
How to Choose an Insecticidal Soap: What the Label Tells You
Choose an insecticidal soap by its label: potassium salts of fatty acids as the active ingredient, a 1 to 2 percent spray strength, your pest and plant listed, and the 90 F limit.
July 12, 2026
Pests & Diseases
How to Get Rid of Aphids Without Killing Beneficial Insects
Knock aphids off with water, prune the worst shoots, and spot spray soap or oil only if needed. A five-step plan that keeps lady beetles and lacewings alive.
July 12, 2026
Pests & Diseases
Powdery Mildew vs Downy Mildew: How to Tell Them Apart
Powdery mildew is a white powder on the leaf surface. Downy mildew is yellow angular blotches with fuzz underneath. Compare symptoms, weather and treatment.
July 12, 2026
Pests & Diseases
How to Diagnose and Treat Rose Black Spot
Identify rose black spot by its feathery-edged dark lesions, then treat it with leaf cleanup, dry foliage, dormant pruning, resistant roses and timed sprays.
July 12, 2026
Pests & Diseases
Slug and Snail Control: What Actually Works in the Garden
Slug and snail control methods compared on evidence: handpicking, board traps, iron phosphate bait and copper work. Eggshells and coffee grounds do not.
July 12, 2026
Pests & Diseases
Squash Bugs vs. Squash Vine Borers: How to Tell Them Apart
Squash bugs speckle and crisp the leaves; squash vine borers wilt the whole vine from inside the stem. Compare eggs, damage and timing, then treat the right pest.
July 12, 2026
Pests & Diseases
Why Are Your Tomato Leaves Turning Yellow? A Diagnosis Guide
Yellow tomato leaves come from nutrient shortages, leaf spot diseases, wilts or plain aging. Use leaf position and pattern to tell which, and what to do next.
July 12, 2026