onion sets

[charles]

 You can plant closer for sure, though if too close the onions will be smaller – try some different spacings to see. Depth wise, if the compost is recently spread and still fluffy, the sets want to be a half inch or so deeper so their tops are invisible, also this may help birds NOT to see them and pull them out. As the compost is taken in, other soil comes up, mainly as wormcasts, so the planting level remains similar.