Hmmm, I don't tend to sow seeds directly into the plot because of my baking ground. If a crust has formed over the drill, then this could well be preventing the seeds from breaking for freedom. I know it is a common problem with carrots. An inch deep is also rather a long way down. I merely scratch the surface when sowing, even in trays and pots. I think the general rule of thumb is plant the seed as deep as it is big...if you understand what I mean.... :-\ And maybe a little toooo generous on the water. I have no access to mains water on site, so once the drill is watered, that is it, they receive only what mother nature provides, and my roots all do very well and come up all on their own. Number one son sowed some spring onion seeds in a growbag and they took about 8 days to sprout.....I would say, maybe try again? :-\
