Vegetable Gardening

Silvery, stippled squash leaves almost always mean spider mites. Here’s how to confirm them with a simple paper test and treat an infestation effectively.

White powder on squash leaves is almost always powdery mildew. Here’s how to confirm it, treat an active infection, and keep it from taking over your squash patch.

Yellow spots on squash leaves have several distinct causes, from downy mildew to natural variegation. Here’s how to identify which one you have.

A mottled mosaic pattern on tomato leaves means a viral infection. Here’s how to confirm it, which virus is likely responsible, and what to do next.

Yellowing that starts specifically on lower tomato leaves has a distinct set of causes from general yellowing. Here’s how to read this specific pattern.

Purple leaves on tomato plants usually mean phosphorus deficiency or cold stress. Here’s how to tell the difference and the exact fix for each cause.

When tomato plants wilt despite moist soil, the cause is usually disease, not drought. Here’s how to identify wilt diseases and the right response for each.

Holes in pepper leaves usually mean one of four pests. Here’s how to identify the exact culprit from the hole shape and pattern, plus the right treatment.

Brown spots on pepper leaves have several distinct causes, from bacterial spot to sunscald. Here’s how to identify which one you have and the right fix.

Yellow leaves on pepper plants have six distinct causes, from nitrogen deficiency to overwatering. Here’s how to identify which one you’re dealing with.