Curling leaves on tomato plants

[LaBelleSauvage123]

I’ve grown some tomato plants from seed for the first time - they’re plum tomatoes (called San Marzano I think). They’ve grown well since I planted them out two weeks ago but now the top leaves are curling badly on most of them. They’re getting regularly watered. The leaves aren’t browning or yellowing at the edges, just curling up. I don’t remember this happening on tomatoes I’ve grown before, but the weather has been much hotter. Any ideas?

In my experience it’s always been due to a lack of water. But I do think the leaves get really scabby the older the plants get.

Have you been adding tomato feed?

Water
Feed
Debug

Apparently an upward leaf curl is environmental. Could be too dry, too windy, too hot. Nothing to worry about.

Downward leaf rot can indicate too much water/rotting roots. Just watched a very interesting YouTube video on it 🤭

Ah that’s interesting. All the leaves are curling upward so fingers crossed it’s the hot and sometimes windy weather we’ve been having. They gave plenty of water and no visible bugs - they’re still quite young plants. I didn’t think I was supposed to feed until the plants start flowering - is that right?

I was looking up how to achieve best results from my seed grown plants only yesterday. The advice given was two regularly spaced, ‘half’ waterings when you plant out rather than one big one. Helps with the watering related curl and split fruit skins.

Ours were like that last week and we noticed lots of black bugs on them. We sorted the bugs and the leaves recovered.

Could it be the night temperatures as some have been below 10 degrees over the last few weeks? I planted mine out ten days ago and have covered them when the temperature has dropped. Last week Monty Don said he was waiting another three weeks before planting his out.

Watch out for Thursday evening, it's looking pretty cool.

We are in the south west and haven’t had any temps below 10 since I planted out. Absolutely no signs of bugs. Will try the spaced half watering - I would have thought it was because they’re too dry but I make sure the soil is always damp