Hi!

I'm new to this forum so I hope I'm posting correctly :)

I have a few cherry tomato plants, a couple of them were grown from seed over two years ago, and they haven't stopped producing after some thorough prunings. The other couple are about a few months old.
Recently they started growing vigorously for springtime but some of the older leaves (and a few new ones) are getting leaf curl. They had a teeny bit of whiteflies but I killed them straight away with soapy water and have now been clear of those for over two weeks and the curling is still happening, and getting worse. The new growth is perfect, as you can see in the pics. They are also setting fruit but not very efficiently, a ton of them are falling off or ripening when very tiny.

I'm in Mexico city, the weather is rather warm and the nights are not too cold. They are in full sun, drain extremely well and I never overwater them. I feed them every three weeks or so with 15-8-20 fertilizer and amend with compost every 4 months-ish.

I just sowed a bunch of new tomato seeds, different varieties, and I don't want them to suffer the same thing.

Any tips or ideas?

TIA!

Since you also mentioned bud drop, the likely culprit is the weather: cold spells will cause old growth to curl on most Solenaceae.

However bear in mind that it's possible your plant is entering senescence: while in its original habitat (somewhere south of your position) tomato is technically a perennial, it will start declining after a few years and keeping it alive and productive becomes such a hassle it's generally just cheaper to replace the plants.

Leaf curl is normal on some tomato varieties. It shouldn't affect flowering, fruiting or harvest. I didn't see any insect or disease damage in your pics; I think your plants are fine.

Thanks to both of you, I did a second spraying with soapy water to make sure there were no more whiteflies and removed the very curled leaves, there are no more new ones growing like that. It might have been indeed a cold spell o just normal curling, I'll give them this season longer and then sow new ones.

Cheers!

That's good news!