Tomato Leaf Problems

Leaves are the plant’s dashboard. They light up long before the fruit does.
The trick is noticing which leaves are affected — old or new, top or bottom — because that narrows the cause faster than anything else.

Tomato leaves curled tightly upward on a garden plant in hot sun

Why Are My Tomato Leaves Curling?

Rolled up like cigars? Usually heat or water stress, not a death sentence.

Fix This →
Lower tomato leaves turning yellow between the veins

Why Are My Tomato Leaves Turning Yellow?

Bottom leaves first? Different problem to top leaves first. Start here.

Fix This →

Keep looking

Other tomato problems

Or start from the top with What the Hell Is Wrong With My Tomato? — all the problem guides, sorted by symptom.

Keep Your Tomatoes Alive

Occasional tomato-growing tips, problem fixes and seasonal reminders.

No spam. Your tomatoes already have enough problems.

Signups aren't connected yet — the list opens soon.