Buggering blackfly !!!!

[mpdjulie]

I have blackfly on my courgette flowers.  I have never seen this before.  They have only appeared the last 2 days.  They are not on the courgettes themselves.  Will they affect the growth of the courgettes or plants?  Is there anything I can do to get them off non chemically as I grow organically?
Julie

[mpdjulie]

[earlypea]

I wouldn't worry about it.  Had it bad last year once they'd decimated my BBs they moved onto everything even my potatoes and parsnips  ??? , but they soon got sick of the squashes, didn't seem to enjoy them and quickly fizzled out.

Just brush em off, they'll soon be gone in my opinion.

[star]

If you plant some sacrificial Nasturtium around your plot, the blackfly tend to prefer them, unless you can get some going now, it might be a good plan for next year. :)