in article , Peter Richards at
wrote on 10/10/03 2:39 am:

Hi,

Our new tomato plants are showing signs of dark brown and light purple
patches on the leaves, obviously blight. We prefer an organic solution
to the problem. Can someone recommend something please.

Peter

Peter, my husband used to grow tomatoes commercially for many, many years,
as did his father before him. He says he knows of no organic method (and
he's very expert on biological controls and uses them all the time in our
glasshouses) He says that he knows of no truly effective inorganic control,
either.
In his opinion, the only answer is to pull them out and burn them. Don't
plant new plants in the same area. Same goes for potatoes if they get
blight - it's the very devil!
Sorry not to be more encouraging but there seems little point in your
wasting time, money and energy.
--
Sacha
www.hillhousenursery.co.uk
(remove the 'x' to email me)