Originally Posted by stuart noble

On 21/02/2015 21:50, kerrygirl wrote:
Bob Hobden;1011722 Wrote:
"kerrygirl" wrote..-


Hello,
I have flower seedlings growing in my greenhouse in a heated dome.
Marigolds, pansies, petunias, lobelia and alysum. My problem is the
alysum are tall, weak, falling over and dying and the lobelia seem to
be
on pause. Do I need lights, even though the greenhouse has daylight on
all sides.

How tall should any seedling be?
When can I take them off the heat, my greenhouse read 3.5 oC last
night.
-
The light levels in the UK at the moment are not good most days and then
you
have the plants inside a greenhouse and then in a dome so two things
reducing the light levels reaching the plants still further. Coupled
with
heat making them grow, they are hunting for light.
Personally I wouldn't plant seeds of those summer bedding yet, April at
the
earliest, but then I won't chance the frost until Chelsea.
--
Regards. Bob Hobden.
Posted to this Newsgroup from the W of London, UK

Thank you Bob for replying. I guess I am in a hurry




Sweet peas do pretty well on low light and low temperatures but, as Bob
says, summer bedding plants generally don't. Everything races away when
the time is right, but not before.
I've been rearing some abutilon indoors, and I've gradually lost 95% of
them, but the odd few that have survived look as though they mean
business. Natural selection at work I guess