Allotments 4 All

I sowed my sunflowers about 2 weeks ago and they are inside, they are gitting long now should I take them to my cold greenhouse will they survive

I thought that sunflowers were sown directly into the flowering site and certainly not yet. Put them in the cold greenhouse and then sow some more in about a months time.

we sow ours mid march, going to do them in loo roll inners this year  ;D