Posted: 28/05/2013 at 20:09
This is a new one on me. I have potatoes in buckets on spent compost. This has bed done before with no problems but they have been slow and not grown as much as I would have hoped. But more importantly they have developed tiny spots( like rust spots). Any ideas, should I feed them with Tom feed??
this isn't blight as the plants are healthy another than the newly formed spots.