What are they? Seedlings of what? Makes a big difference as to when and how. At that size in the picture (closer pic would help) they are too tiny to do anything with now.

Dave

They are Coleus and I understand that they are too tiny. The purpose of the photo was simply to show that they are just now germinating and in what conditions.

Coleus are slow growing so you have plenty of time. Once they develop some good sized true leaves they will be much easier to handle for transplanting. You could do it at this stage but it is easy to injure them if you aren't experienced at doing it.

When the time comes have your cell packs already filled with damp mix, use a pencil or similar tool to poke a hole in each sell, pop out each seedling with a small spoon if you don't have the tools normally used, and frop it into the prepared hole. Firm up the soil around it lightly.

I normally transplant coleus in clumps so if you end up with more than 1 or 2 in each cell that is fine. Google Images has lots of good pics on 'transplanting coleus'.

Dave

I would suggest adding some coarser materials to the mix when you pot them up. If that mix is actually just vermiculite, spagnum moss and peat moss, it is really going to hold water. I have had even larger coleus rot at the soil line if kept to wet. Mix in some pearlite, or pine bark fines for better drainage.

Thanks for the comment mandolls. I just bought a bag of pine bark mulch per tapla's suggested 5-1-1 mixture. I am afraid my soil is too damp and I am hoping I can make it through to the transplant into cells without rotted roots or damp off!