winter veg in greenhouse

Hi all
I am planning to grow some vegetables in the greenhouse through the winter. Will I be able to use the seed I normally use in the garden or is it essential that I purchase more dedicated seeds for this.
I was hoping to grow lettuce, radish, spring greens and I would love to hear what other s are growing.

Thanks oh by the way I was on before but lost my log in details

Dave, Denton Newhaven East Sussex

 

Welcome back Dave.

Its a bit late to get things going from seed now, the light levels have dropped & even in the greenhouse things will get leggy & prone to fungal attacks. When the frost comes it will still get into an unheated greenhouse i'm afraid.

Might be worth a shot with some Lambs Lettuce & Land Cress, but even those I would have started off in August for a winter crop.

 

As Zigs says, light levels are low now for most things.

It might be worth trying Mizuna though. It will still germinate at low temperatures, I've got some I sowed last month in an unheated greenhouse, which is still actively growing.

You could try Rocket too. We had quite a lot in a greenhouse at work which had gone to seed. We pulled it all out while having a tidy up in the greenhouse a couple of weeks ago and there are already hundreds of new plants which have germinated from seed which dropped there.

 

Good call Trunky Forgot about Mizuna.

 

What if the seeds were started in a heated propagator, then once germinated, moved out the greenhouse?

 

Still too late IMHO. They won't build up into "plants" in time.

Buying some decent sized plants at the garden centre might do the trick. That would gain you a month's growth, maybe 6 weeks ... but I sow my winter greenhouse in August, as others have already said.

 

I have mixed lettuce in pots with plastic bells on top and carrots as well. Both germinated weeks ago but I picked enough salad leaves for a meal this evening. Doubtfull about the carrots coming to anything, I might have to eat the leaves with the salad stuff!