I planted a number of seeds a couple of weeks ago but I don't see any
signs of life yet. I planted the following,

Silver Queen Corn
Peas (soaked the seeds overnight before planting, they looked like they
were sprouting when I planted them).
Beans (same as peas)
Cucumbers
Carrots
Spinach

The only thing that looks like it's coming up is the spinach. There are
some grass like plants in a thin line where I planted the spinach so I
assume that's my plants and not grass.

I have set up an automatic sprinkling system that waters the gardens for
10 minutes before dawn and 10 minutes after sunset.

My tomato and strawberry plants (planted from flats not seeds) are doing
fine with the exception of a couple of rows that appear to have been
eaten by somebody.

Did I plant to early? I'm in Massachusetts near Nashua and Lowell.