Key Lime Seedlings

The little seedlings are still under the dirt. I've tried everything to get them to come up to no avail. A few of them have rotted and turned brown but a few have the little start of a root which I hope will keep going. The dirt is a little moist so I have decided to put the pot in full sun and dry it out a little. If this doesn't work I still have over ten key limes to try again. I think I'm using the wrong dirt to start with so I won't be too upset if none of them survive.