1st time - root stock when should i see in spring

Hello,

i bought some root stock for the 1st time last fall
i planted it based on the instructions - i do have some that were buried in pots in a vegetable garden over the winter
they were well covered with mulch and leaves
I have uncovered them

i am in zone 6a (london ontario)temperature the last few days has been 15-18 celsius (59-64 F)

I am wondering if some didn't survive or if i am just being impatient as i haven't seen anything poking up yet

here is what i am waiting on:

1) Giant Hardy Phlox - a number of varieties
2) Butterfly mix - Asclepias tuberosa 3 varieties
3) Astilbe 4 types
4) Hardy Cyclamen
5) Hardy Fern - not sure what varieties