On 21 Dec 2003 16:56:02 -0800, (Tony) opined:

Curious to see what others experience with growing cold frame / green
house tomatoes in the winter months?

I have three plants in my greenhouse. Brandywine, Roma and Sweet Million.
Sweet Million are doing best, the others limping along. There is not enough
light for them to develop flowers, but I am going to cut them back next week and
stop them from producing. Then, in spring I will plant them into the ground and
see what happens. I can tell you that without proper nutrition, the fruit will
be tart. Also, are you opening this cold frame during the day? Currently, in
Austin, my 10'x20' greenhouse heats up to about 130 degrees if I keep it closed
during the day. I have to open all the vents, door and windows during the day.
I don't know the average temperature in Dallas, I forgot, but I think it's
cooler up there than down here in the hills...during the day.