"Nick Maclaren" wrote after
Bob Hobden replied to:
"Gareth" plants).

To get hot Chillies you need to provide plenty of water to the plants, if
they don't get enough water the fruit will be mild flavoured no matter
what
variety you grow. I suspect this may be your problem especially as you are
growing them in pots in a greenhouse. Make sure they always have water
available, use water trays underneath the pots and fill them daily or more
often in hot weather.

This is not my experience. It may be true for some varieties, but I am
pretty sure that it is not true for all. Hot chillis are grown in
arid conditions, and many of the supermarket hot varieties (which I
am SURE are grown with plenty of water) are lukewarm.

I had heard this about lack of water and mildness and some years ago I gave
a neighbour some of our Thai Dragon to grow in his greenhouse the rest going
out on our allotment as usual. Our ones were as hot as ever but his, him not
having watered them enough (any time I saw them they were wilting!) were
very mild flavoured. Perhaps they don't all react that way to water but his
were grown in better conditions than ours, other than the watering.

The supermarket hot varieties would be grown quickly (high feed etc ) for a
quick large crop, like most of their produce, so will lack flavour/heat
compared to what we grow out on the allotment where the plant has to work
more.
--
Regards
Bob
In Runnymede, 17 miles West of London