Tree Fern problem, Is it dead?

Hey everyone!
So around a month ago I'd purchased 2 tree fern trunks. One around 3ft and the other around 1ft tall.
The larger one is growing really fast but the smaller one hasn't changed from the day I'd purchased it. Not sure if it's dead? or if I haven't planted it deep enough.

Anyone got any ideas as I'm lost with with one?

 

Hi

I grow tree ferns. The two you bought had they been kept frost free over the winter ?

Its not about the depth ITS planted but its about keeping it moist at all times as it will eventually grow roots in to the soil ... its showing new fronds which is a good sign ...