From what I've read, the gray shallots are really easy to grow. I love to cook with them, but they're not cheap in the grocery. I'll be so excited if I can successfully grow them myself.
I started by digging a trench that was about 1 1/2" deep because shallots should be planted so that the top of their necks stick out a little bit from the surface of the soil. They should also be planted about 8" apart. I marked 8' on the handle of my Japanese hoe so that I would space the shallots appropriately. Once I placed the shallots in the trench, I covered them up with soil.
The onions are a lot fresher, so I'm not so worried about them.
I planted them the same way that I planted the shallots, only the trenches were 1" deep and I planted them 5" apart.