This will probably be of no interest to anyone but us but………
last night when I was watering our garden I found for the first time our first runner beans.
We have two tubs of runner beans growing, they are positioned next to each other against a west facing wall to get maximum sunlight. I am perplexed that whilst both groups of plants are thriving one seems to be covered in black fly whilst the other one has not one as far as I can see. The flyless one has now got several beans hanging from the higher part of the structure.
I have never grown runner beans before (or at least not me personally, my parents did when I was a child). Is it possible for the fly infested plants to bear fruit (beans) once the flies have been dealt with?
I have used bug spray on them and my friend has recommended diluted washing up liquid.