What can i grow in my cold frame

Hello Carman, Welcome to Goy.
You will get 3 grow bags in your frame, if in trays to make them firm you could grow, Peas, broadbeans, lettuce, cabbage, early March potatoes.
Flowers: Stocks, Bellis, Polyanthus, Forget me nots.
Bulbs: Daffodils, Tulips etc.
When big enough take out the trays and start something else.
You will get some more ideas from other members I'm sure.

I'd wait until all risk of frost is past before sowing - just to avoid dissapointment if we get a late cold spell. I can sympathis with you - I get so immpatient to start growing during these winter months!