Derek Turner wrote:
It's 2 deg here (feels like -3 in the easterly wind) and likely to stay
that way for a few more days yet. I have an unheated greenhouse available
to me. Is it still too early to sow the Sunrise seeds, do you think (they
are for outdoor growing)?

Personally, I am about to start sowing mine this weekend (it's been on my
todo list for weeks!) and putting them on an indoor windowsill. I wouldn't
attempt to germinate anything in an unheated greenhouse at this time of
year!