16 per square is the same planting density as carrots. Maybe that is for spring onions rather than bulb onions?
Things that have done well in SFG spacing for us - garlic (4), lettuce (4), carrots (16), parsnips (9), dwarf French beans (9). Spring onions I find easier to grow in clumps. Beetroot do OK but I'm going to try in Charles Dowding style clumps next year as it's easier to transplant multi-sown modules.
Things that have done well in SFG spacing for us - garlic (4), lettuce (4), carrots (16), parsnips (9), dwarf French beans (9). Spring onions I find easier to grow in clumps. Beetroot do OK but I'm going to try in Charles Dowding style clumps next year as it's easier to transplant multi-sown modules.
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