Tomato leaf discolouration

labsmith13

Hi,

hoping to get some advice on possible causes of these marks on the leaves. They started appearing initially on lower leaves but now spreading up plant. 

Thanks

Pete.8

Looks like they've been a bit too cold - probably overnight if they were outside - they don't like temps below 13c, it may slow them down a bit but they should recover and be fine

labsmith13

Thanks for the swift response. Thought it may be a bacteria/fungus as they were growing inside my house when they first showing symptoms, but that was after a period of being outside. Hopefully as the temperature continues to get warmer they’ll show an improvement.

Next one for you…these ones have been on garden decking the whole time and showing strange leaf curl in new growth. Lower leaves all looking healthy.

Pete.8

That sort of thing can happen if spray weed killers have been used in the vicinity.
If not, once again it's likely weather related and hopefully they'll grow out of it as we get into summer properly.

The sort of blue hues on the leaves of the 1st lot usually indicates cold temperatures.

labsmith13

Thanks for the reply. Fingers crossed for good weather healing properties! 

Fairygirl

The soil level in some of your pots looks very low. Make sure they have enough soil depth for root systems. 
Cold is the usual reason for that purpling. If they were outside in lower temps, that can happen very easily. We haven't had overnight temps here above 11 degrees, at best, until a couple of nights ago, which is why they have to stay under cover.

I agree re weedkiller, but if plants have a lot of growth - and yours look big, they can then curl/wilt when temps get too high. Above mid twenties can be too much for them, so if you're in a hotter part of the country, that can cause these variations in growth. It can be difficult to keep the temps steady when these things happen, but it shouldn't be a major problem   

JennyJ

Tomatoes are one of the few plants that you can bury the lower part of the stems when you top up the pots. They'll grow new roots from the buried part of the stem and be stronger for it.