In message , Stewart Robert Hinsley
writes
In message , "Robert
(Plymouth)" writes


"June Hughes" wrote in message
...
I have broad bean plants which have many flowers and are about 4
feet tall. This afternoon, I noticed some 1/4 inch slits in the lower
leaves and on closer inspection, spotted several ants hurrying up
and down the stems of several of the plants. I killed them but know
that is not the end of the matter. I haven't seen any greenfly yet
but suspect that may be what the ants are up to, unless someone here
knows different. I can deal very well with greenfly on flowering
plants like my jasmine by brushing a finger and thumb along the
tainted stem but don't know what to do about my beans and the reason
for the slits is a mystery to me. Can anyone help me please? Many thanks in advance.
-- June Hughes

No idea what caused the slits you speak of but I would not kill the
ants under any circumstances. They do no harm whatsoever and can be
seen 'milking' the aphids were you to have any.

Supposedly ants dispose of aphid predators, allowing aphid infestations
to be more severe. Most people would see that as harm.

Robert
www.rraa.moonfruit.com
Feed the soil, save the planet

Thanks to those who replied. It was blackfly - there was a small crowd
of them in a flower cluster at the top of one of the plants. Squished
now. I shall keep an eye open for further attacks.
--
June Hughes