Another poorly Tomato question

[Leezy2]

I'm a nube, I know there are lots of tomato questions but couldn't find an answer to this one:

Leaves are going a dark colour, followed by pale, but with dark veins. First feed was a week ago, and have also had a spray of Bordeaux mixture last week as some leaves were showing rust/fire blight. No idea if this is a result of the Bordeaux mix or disease, or nutrient deficiency.

[Potstubsdustbins]

That blue tinge is usually from being either to cold or to dry. It looks like they are outside so depends where you are located.

[jonny the plant pot]

They are not happy being outside

[Penellype]

My money would be on them being too cold.

[WendyC]

What variety are they? Where were there grown and how long was spent hardening off? Where are you located?

[Leezy2]

Sorry, my mistake. Should have said, we are in the Limousin in France. Temperatures have not dropped below 15° for about five weeks now. I've two cherry and four salad tomato plants, not sure of exact variety as they were bought as small plants from the local garden Center. In addition I've got four Marmande that I've raised from seed about 4 inch tall, also planted outside. The two cherries have been out for 4 weeks now, the salads for 3 weeks and the Marmande for 2 weeks. All had at least two weeks hardening off because we had some days of 30° plus, as well as some cooler days at 15°, no frost though, so they needed to adjust to the sun as well. So they were in and out a lot, under fleece to start with. All doing fine until a week ago when I fed them and sprayed the Bordeaux mix. Then gradually this week, all gone strange. We've had a bit of rain this week, but the bed doesn't get waterlogged. ???

[WendyC]

Well it sounds like you did all the right things. Have you previously successfully grown other plants in that soil?

[Leezy2]

First year here, so I'm flying blind! The herb bed is just next to where the tomatoes are, all looks well but the veins in the mint leaves are starting to darken a little.

[Potstubsdustbins]

In that case I may suspect phosphorus deficiency, either in the ground or because the ground got to wet at some point. I would give them a scattering of bone meal that may well help.

[Leezy2]

Do you think an extra dose of tomato feed, or just potash?

[Potstubsdustbins]

Phosphate or bone meal are your best bet

[teakdesk]

My first reaction is the same as others - cold - and my second was waterlogging but given your reply I'll add my third; it's a normal reaction to settling in as roots expand out into the soil to find the nutrients they need. Lower leaves of tomato plants often go yellow as the plant moves nutrients up the vine to the growing tip and the dark speckly bits often happen to me, both in the greenhouse and outside, which could be rust but I tend to just cut the leaves off and not treat it.

When I have treated them I'd use an epsom salt spray but I'm doubtful whether I've ever helped mine. I think just making sure the roots and the feed are correct and concentrating on the growing tip is the best strategy.

[Leezy2]

Update

Thanks for all the advise, thought I'd give an update.

Seems the issue may well have been just a bit of shock from being transplanted outside. The plants have put on about 18 inch of new growth in the last 3 weeks and are doing well. Just kept up with the tomato feed:

[cilla]

Mine have leaves like your first photo. I must admit I just took the leaves off as the upper plant is doing well. However I will take the advise about the bone meal. Can I do bone meal and tomato feed as I am due to feed this weekend? I have in pots and ground. Very likely cold.