I wouldn't really say that keeping vermiculite sowings out of direct sun is such a bad idea for newbies. They usually don't realize how quickly such a medium dries out. When they do, it's too late. But yes, yours do need more light, Jennifer, and cooler temps if you can (even as much as down to 50°F).
Had the pulsatilla sprouted in strong light, the seed would have been slower to develop above ground. Being forced to produce sufficient roots to support growth in harsher (stronger) light, seedlings should be stockier, too. But now, you're going to have to be gentle about giving them the stronger light they need, because they will need to adapt to the new conditions. This is the same concept as "hardening off", when you adapt seedlings from growing inside to growing outside.
Germinated under lights. One fixture of two high output T5 60,000K florescent bulbs.
