Seasoncool
Sun6+ hours
Plant spacing4 in
Container depth8 in
Start here
Choose sets or seedlings suited to your latitude.
Keep it going
Keep weeds down because young onions compete poorly.
Layout notes
Plan for the whole plant.
Leave about 12 inches between rows. The listed spacing is a starter distance for common varieties, so check seed packets or plant labels if your cultivar says otherwise.
Open spacing calculator ↗Practical nearby crops
Good starter neighbors for onions.
This page is a maintained starter guide, not a diagnosis or local planting-date guarantee. Check your local Extension service and plant label before making seasonal or treatment decisions.
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