Green Devil

@Fabi83, you have to hardening off the seedlings. The leaves of the seedlings could not be strong enough to avoid water loss caused by the strong sun. But after one week or two the leaves are strong enough to avoid a sort of dehydratation caused by the sun and wind. Now its time to expose them gradually. It also depends where you live and the intensity of the sun. I figured out that it is safe for me put them in the full sun after one week or so.