cucumbers

About 10 days ago I planted my cucumbers and then read somewhere on this forum that it was a bit early and they are very hard to grow on after their initial appearance.

Have just come home from work and looked in the greenhouse to find all four cucumbers are poking through.  My question now is how do I keep them going, they are in a unheated greenhouse with glass over the top of the pots.  Eventually of course I will have to take the glass off but should I still keep them covered with a bell cloche or should I bring them indoors?

It would help all of us a lot to know approximately where you are so we can offer better advice. Simply go back into your profile page and add the info. Thanks.