Tiny black spots can spread across tomato leaves and fruit. Here is how I identify bacterial spot and protect the rest of my plants.

Tiny spotted leaves can spread fast. Here is how I identify Septoria leaf spot and protect my tomato plants before they weaken.

Both overwatering and underwatering make tomato plants wilt — but the fixes are opposite. Here is how to diagnose the problem in 30 seconds and what to do next.

That wildly twisted tomato is telling a story. See what causes catfacing, whether it is safe to eat and how to prevent more.

Red on one side and stubbornly green on the other? Find out what causes blotchy tomatoes and whether they will ever ripen normally.

Those strange seams may look serious, but many are harmless. Identify tomato scars, zippering and cracks before tossing good fruit.

Learn how often to water tomato plants in beds, raised gardens and pots without causing wilt, cracks or soggy roots.

Learn what an underwatered tomato plant looks like, how to confirm dry soil and how to help it recover without causing more damage.

Wilting does not always mean a tomato plant needs water. If the soil is still wet, limp leaves, yellowing from the bottom up, mushy stems, and a funky smell point to overwatering, with practical steps to help the roots recover.

Tomato plant wilting from the bottom up? Check for Fusarium wilt before watering more or planting tomatoes there again.

Most gardeners plant tomatoes too shallow and never know what they are missing. Here is the simple two-thirds rule that builds a stronger root system from day one — and why it works.