Posted 3/13/2018 17:55 (#6639746 - in reply to #6639738) Subject: RE: Need help from Onion growers.
Sw Ontario
Doug,
Ours all all single seeded in 406 trays. We only grow Spanish onions, so you need single plants.
I know from other growers that do double seeded in 288 like you.
Cutting them shorter right before panting helps with separating at planting.
We have ours cut at 5" max.