Help with my Marigolds

[Juice Terry]

Well the "Great August Slug Wars" are now well and truly won. I've exterminated every slug and snail within a 20ft radius of my marigolds and although they are mostly recovering well from their slug nightmare I appear to have a new problem. Quite a few of the leaves which should be a nice dark green colour have turned light brown, at first I thought they were covered in dust but its actually discolouration and its spreading!!

anyone have any ideas what nasty parasite is causing this and how I can kill them? I can't actually see anything attacking the leaves maybe its some nasty plant disease?

 

[aqua]

ah I'm afriad I don't know off the top of my head but someone will soon

My marigolds seem to be ok-ish atm, they looked like they were going to be totally devoured the other week by slugs but I think I caught all the buggers

shame the caterpillars aren't so easy to catch

 

[Ellie23]

If these are ordinary marigolds it might be "rust", check google for some images to see what it looks like. They do tend to go a bit straggly at the end of the summer, and then they die. Their seeds wiill grow you new plants next year.