Patchy yellow on tomato plant leaves

[finglas]

Hi everyone, first post on here and so if i was supposed to introduce myself in another sub forum, then i do apologise.

Just looking for a bit of help regarding my tomatoes. First time ever growing them. I sowed the seed around mid march and i now have 8 tomato plants in a unheated greenhouse.

As of recently thr tomato plants habe started deveolping a slight patchy yellowing on the leaves and not just the lower leaves although it does seem slightly more towards the lower end of the plant. After they yellow they tend to develop brown spots on the topside that eventually turn brown on the underside. The leaves also are curling up a bit and feeling dry and "crispy". I have been trying to water as and when required but living in scotland we dont get the best of weather so i wouldnt have thought id need to water too much!

I took some of the lower leaves off the plants and opened up a window to try and increase ventilation.

I would appreciaye any help or advice you folks can give me. Thanks very much

Jamie

[Penellype]

Hi and welcome to the vine

I wouldn't be too worried about a little yellowing at this stage - the plants look generally healthy as far as I can tell. Are you feeding them? If not, it is a good idea to start giving them a feed of something like Tomorite regularly, as they will have used up all of the nutrients in their compost by now. The symptoms you describe could be the start of magnesium deficiency, particularly if the brown spots are purplish brown.

[Small pumpkin]

Welcome to the vine
I can't give any better advice than Penellype has already given you.
Watering in our beautiful unique climate can be.......... A right pain in the bum!
Looks like you're doing just fine, your greenhouse is looking great.

[damian1225]

as above.. any suspect leaves I just remove them..

And welcome to the forum

[finglas]

thanks very much for getting back to me, i do appreciate it.

First time i have grown anything really and i have these toms, some potatoes and some carrots and a few other bits and pieces.

I have been feeding 6 of the toms with comfrey and 2 with tomorite. was doing that to try and see the difference, if any. at the moment they all appear to be in a similar condition.
doesnt sound as though i need to start panicking just yet!

thanks very much for the help again,

Jamie