Yes, it’s true. The individual onions will reproduce by division. I’ll try to dig a clump that shows this and post it later. You will see this as your onions mature and the single plants start producing clumps of onions. Think of planting a single clove of garlic. Eventually, it becomes a clump of cloves with a single root system.
A permanent location should be used as you only have to plant theses once and as long as you leave a plant to form another clump.
Pepe
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