[Tobiass]

Just curious - i germinated my seeds (peppers/tomatoes/chillis) in airing cupboard successfully.
Moved them to windowsill straightaway. What was interesting was that in majority of cases the seed case was still attached to seedlings - cotyledons had not emerged. Searched internet and followed the advice to moisten seedcase with drop of water and leave and sure enough within a day or so the seedling leaves emerged.
Just curious as to why seed cases were still attached???

[pdblake]

If moistening them worked then they had presumably dried out before they could open and fall off.

[mumofstig]

Sometimes it's because the atmosphere is dry, sometimes it's because they aren't sown deep enough and sometimes....................just because 

[Franceska]

I don't know why, but my butter nut squash seedlings are doing the same thing.  Right now I have two with the seed casing clamped tight around them and they are up an inch!