I feel your pain.
My order was supposed to arrive in March and instead they sent it last November.
I did exactly what the above poster said to do.
They were on the North side of the house and always shaded.
Most of the 80 plants came out of the ground the way they went in.
A few grew some more roots while they were covered.
I
should know in the next few weeks whether they made it or not.
The only thing I might add is that I tried covering them in both peat moss and soil
I was surprised by how hard it was to dig them out of the peat moss 3 months later.
The soil wasn't all that easy either.
I would probably use a fine mulch next time
Good luck