Quote:
Originally Posted by Farmer_Gyles  my broadies are 12" high and have been covered in blackfly over the last couple of days - i'm not pinching them out now as they're supposed to reach 4ft high, so will use a pesticide and see how we go from there |
Ideally your beans would be grown a bit more before the blackfly comes along, but this isn't always easily done, I know.
You MUST get rid of the fly, so take away it's food source ... tender young growth. Pinch out the growing tips for goodness sake. The plant will still produce beans even if it is vertically-challenged.
BTW: Autumn-sown broadies are rarely affected, being quite tough to eat at 6 months old.