I don't grow Hepaticas in post, but I found this info for you.
Hepatica's in pots have been inside a cold glasshouse all winter and are now showing active growth ( Hepaticas early) the first task at this time is to very carefully remove the old leaves this is done one at a time, if you try to remove several you could accidentally damage the dormant flower buds. Firstly and perhaps most important is compost, Hepatica's do not like a pure peat based compost as this holds too much water and heats up during summer thus killing plants, here are a few mixes to try:
Mix 1 one part John Innes sterilised soil one part Multi purpose compost the ordinary garden centre kind and one part pea gravel. Mix 2 (my mix) Two parts John Innes no3., two parts Pea Gravel and one part Cambark or similar composted bark (If you have access to good leaf mould then use this rather than bark). I have also used Perlite and Vermiculite instead of gravel but gravel is cheap and easy to find here.
Potting methods, if you have your own small seedlings or buy a plant from a nursery and you want to either pot up or plant out, remove from small pot, place the plant inside new pot (having put some compost in first) fill the pot to within 5 cm of top and firm around root ball, to provide good drainage top dress around the noses with pea gravel. Make sure you do NOT bury the growing noses/crowns as the plants will rot.