On 24/07/2017 16:47, David wrote:
On Sat, 22 Jul 2017 22:02:44 +0100, sun flower wrote:

I noticed with my sunflowers this year that something has been attacking
the leaves. Various holes appearing in them. I have taken damaged
leaves off and inspected very closely: no sign of leaf miners - and no
sign of any other bugs.
I woke up in the middle of the night last night and even went out with a
torch in the dark: but still no sign of anything eating them.
(Slugs and snails are well controlled)
The only thing I have noticed are many ants "farming" their aphids: but
I have always had those with no real holes in leaves in previous years.

One suggestion would be leaf cutter bees (or other similar airborne
insect).

Cheers


Dave R

Small holes could be earwigs (which are more destructive than you would
think!) but if the holes are at the edges then leaf cutter bees as
suggested would be a good shout Then of course there are caterpillars
some of which live in the soil so are difficult to spot

--
Charlie Pridham
Gardening in Cornwall
www.roselandhouse.co.uk