Topic: my windowsill basil's got black spots?

[Ceri]

I've got various ages of basil (if you know what I mean!) on my windowsill - the youngest is in modules and some of the plants are beginning to develop a fine spattering of black dots that are pitting the leaf surface.  A tomato seed has obviously made its way into this group of modules and it too has this spattering - any guesses please?

[john_miller]

No guesses. It's a type of bacteria in genus Erwinia. More than one species can cause these problems so I can't be more precise. They grow in warm, humid conditions. Try to ventilate to let the air dry out and allow the leaf surface to dry too.

[Ceri]

thanks John, I've moved them somewhere cooler and drier - perhaps I took Basil being a tender plant a bit too much to heart!!