Does anyone have any idea what this is on my outdoor tomatoes? I've looked it up in my "Vegetable Expert" p'back but it isn't much help.
Blight apparently shows on the edges of the leaves in darker patches than this.
I am at a loss! Should I pull them up and start again, or just pull off the affected leaves?
N.B. For a better view click on the picture and you'll get an enlargement.