runner beans

[anthonyjones]

help in getting rid of black fly please

[Hazel at the Hill]

squish/spray with weak washing up liquid/spray with hose.

Other suggestions if you do a search (on the top green bar).

Welcome to the vine.

[piskieinboots]

I have the blighters on mine also - the ants are farming them big time!! I just squish with my fingers, but then I'm 'aaaarrd

[coreopsis]

As the girls suggest above.
From the other part of the garden:my rose was very badly hit by greenfly(I know it's not the black one) and I planted some lavender plugs beside it(about an inch tall).After a few days the greenfly decided to go elsewhere.
Maybe you could try even placing a pot of lavender beside the beans-lavender is described as "bug repellent"
Good luck

[Two_Sheds]

Squash them in your fingers.
If a whole leaf is infested, pull it off and crush the lot under your foot.