they will come up no problem unless something will eat them.Mine are always slow to start going too.The soil is still wet and they take time.they sprout and then take time so just give them some time.A bit of liquid fertilizer may be given, but still they take time.

I don't know why people think peas will grow in winter conditions. Check out the link.

Here is a link that might be useful: pea germination

Snow peas planted presidents day week are 8" tall. jwww