Frozen soil in plant pots in cold greenhouse

I have a number of small plants in plastic 5 inch pots in my cold greenhouse which I potted up from plug plants but the soil in the pots is frozen - should I insulate the pots with something or should I bring the plants into my cool porch which rests against my house? The plants are young echinacea prima donna, verbena buenos aires, Aquilegia Scott Elliott, leuchanthamum crazy daisy, coreopsis golden joy and digitalis dalmation mix.

 

I'd probably put them somewhere frost free, if they stay frozen you'll possibly lose them, you could insulate them but I think if you have somewhere to put them that stays frost free it's an easier option.

 

Insulating now they are frozen would be the wrong thing to do, they would then remain frozen for longer.
As @mazambo says, frost free is the way to go with small plants like these.

 

some dont mind a slight frost but the others mmmmmm you may have lost ..if the soil was dryish it helps in a cold greenhouse to help them survive the winter

Spruce

 

Thanks @pete a bit off duff information there from me, glad you're riding shotgun

 

Allowing the surrounding temperature to rise steadily will help and once the composthas thawed, then some protection eg; horticultural fleece or even newspaer will do the trick. Keep the plants on the dry side.

For outdoor containers, winter protection is an asset. In simple terms. Frost causes expansion. Compost in containers is unable to expand outwards, only inwards. Root and stem damage often becomes the victim. Plants in the open ground have the benefit of the soil expansion outwards.

 

It wasn't duff information from you, I should have added that once thawed then some insulation would be a good idea.
But as we both said moving to a frost free area would be the best thing to do.