Quote:
Originally Posted by djt
How strong should the soap solution be? I tried spraying mine, but obviously made it too strong as it turned the leaves black! The beans were good though. Next year I'll pinch out the tops.
Deb
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Oh no Deb,
that sounds like you used the anti-bacterial stuff that I always tell members not to use!
Mrs D. uses the eco brand. You need a really weak dilution of normal washing up liquid to water, about a teaspoon (or maybe less) of washing up liquid to a few litres of water. The easiest thing is to just pinch the tops out - it's amazing that a little bit of green at the top of broad bean plants can attract so many blackfly.