How are your Japs doing?

I planted Japanese onion sets in autumn (about October if I remember rightly).

I now have my spring planted sets ready to go in and looking at my autumn planted sets, some haven't even put out a growing shoot yet. They have a few roots but that's about all.
Usually when I am ready to plant out the spring sets the Japs are about 6 inches tall......but not this year.

Anyone else's Japs lagging behind?