The various flies on my potatos plants

Hi, its been weeks and weeks since I last blogged about the various foodstuffs I'm growing in my garden, maybe I never will again, other website do that sort of thing far better. Anyhoo, the other day I noticed my potatos had some greenfly on them, and on closer look, there were other wee beasties too.

So I took some photies.

Green


Brown


Black


White

I'm not sure if they're doing my potatos any good, but will they harm my yields?