[zestymordant]

Hi,

My tomato leaves have started to change colour recently, does anybody know why?

Thanks!

[JayG]

Looks like it's just the lower leaves - they're the oldest and have done quite well to still be there at all! 

[solway cropper]

They look a lot healthier than mine.

[Plot 6B]

I tend to cut some but not all of the leaves off at this time of year both to help the fruits ripen and to cut down the risk of infections.
It is normal for the leaves to change colour.

[gavinjconway]

At least they are not blighted  .. you can cut them off as they are old now and will let air flow around the plant easier.