Klara wrote:

In message , Miss
Perspicacia Tick writes
My daughter says she has black spots on her chili and aubergine
plants. Is this the same sort of thing as potato blight? What can she
do about it - preferably organically? (Being very allergic to
aubergines, I have no experience with growing them.)

As you've no responses thus far, I thought I might hazard a guess.
Chillies are capsicums (capsica?) and, as you have correctly guessed,
aubergines belong to the same family as the potato (solarnum - commonly
known as the deadly nightshade family, which also includes the tomato).
Therefore, unless someone corrects me, I would assume that the blotches
do not share a common cause. Unless I'm corrected, I would treat the
aubergine as for potato blight (instructions from the RHS can be found
here http://www.rhs.org.uk/advice/profile...ato_blight.asp). I do
not know anything about chillies so cannot advise here.
Warmest wishes,

I wonder whether in the case of just a few pots (she has now found
similar spots on a tomato plant) the answer this early in the summer is
to throw everything away, scrub the pots, and start over?

I'd hang on. My Chillisand bell peppers have black spots all over the stems
and I was worried about it when it happened the first year. They don't die
and they fruit fine. I've never grown aubergine so can't comment.

...And then most things develop what looks like blight, everything else
is covered in greenfly...

Smudge the greenfly off with a finger and give them a blitz with lightly
soaped water.

Warwick