What to do with plants that require darkness?

Today I winter sowed the following:

Persian Jewels (Nigella damascena)
Blue Bird Delphinium (Pacific Giant) - Delphinium elatum
Clear Springs Mix Delphinium (dwarf Pacific Giant) Delphinium elatum
Mission Bells California Poppy - Eschscholzia californica
Camelot Mix Foxgove -Digitalis purpurea.

What am I to do with the delphiniums which apparently need darkness to germinate? Do I leave them outside until I think the soil temperature is getting to germination temperature - then put the delphiniums in a dark place? Do I cover them with something and hope they don't overheat? Any ideas?

Thanks.

I sow them the same way I wintersow all my other seeds. Doesn't seem to be a problem and it keeps everything simple & uncomplicated. Here is what the Wintersown website said about germinating seeds in darkness. http://www.wintersown.org/wseo1/Light_Requirements.html

Half of the time I don't even remember to look at the directions, or I might not have any directions if they're things I saved or gotten from someone else. If I do know that darkness is recommended, I sprinkle potting mix over the seeds. Otherwise, I just surface sow most things.

Karen

Thank goodness! I had images of me trying to tape newspapers to plastic and then watching the newspaper blow away in the first breeze!

Well, on like pansies, I do put a couple layers of newspaper cut to the proper size tho. It sure does help. My pansies are coming up now just fine. You just take the newspaper off after you see the sprouts.
But I have the seeds in small pots, 4" x 5" size, in my small plastic greenhouses. I have like 12 different seeds finally germing!
Carol