Son planted a heap of sweat peas they have spread all over a garden
fence and are a riot of colour. Thing is they seem to be positively
infested by thousands of Hoverflies. Can an infestation like this
damage sweet peas (their is a Rose in the same ground) or will they die
of when the sweet peas do?
Found some small caterpillar/maggot things on leaves do not know if
they are Hoverfly larvae or from cabbage whites so sprayed with "bug
off" and the caterpillar/maggots seem to have died of but this spraying
doesn't seem to have affected the adults either in numbers or proximity
to these sweetpeas.