Hello everyone,

I purchased my tomato plant in a supermarket and after a week his leaves started turning like this
I thought that maybe passing from a greenhouse/store with artificial light to a balcony with sunlight may have represented stress for him, but time is passing and he is getting worst.
Fruits are fine (for now), but as you can see leaves are quite bad.
Do you think can be a disease, maybe a fungus?
Can I try to treat it with potassium bicarbonate?

Thank you in advance for your advice.

Cheers,

Federica

Have you fertilized it?

Google "tomato potassium deficiency", that's what my guess would be.

Does that tomato plant sit on that window ledge all the time?

Did you harden it off before putting it outside for long periods of time?

And it looks really dry to me. What's your watering schedule?