Tomatos, new growth curling?

[Nickn83]

Hi,

I am new to this forum and was hoping someone could help me.

I'm growing tomato's for the second year, the first year was successful. This year my 4 tomato plants where doing fine until i started putting them out to harden them off. I noticed that on at least 2 of the plants the new growth has curled. I have continued to put the out each day but in a more shaded area. It has ben a few days since i noticed but they haven't improved. Any idea what has caused it? I have heard of virus from a fly that can cause this but they have been kept in the house until now. thanks in advance.

[ameno]

Cold nights and excess daytime heat can cause symptoms like this. Either way, I wouldn't worry about it too much unless it gets significantly worse.

[MarkPelican]

Erratic watering can also cause leaves to curl. Don't water them too much, overwatering causes more harm than underwatering because you drown the roots.

[bramble]

I would think it's the warm days and then the drop in temp at night.
They should be fine.

[peanut]

As others have said, It's the cold nights that cause it. They'll be fine, just beware of any cold nights and make sure you have something to protect them with.