Translations:Onion/13/en
From Vintage Story Wiki
Farmed onions take 2.47 months (22.2 days) to grow at default 9 day per month settings. Naturally occurring or player farmed onion crops mature at growth stage 7. Break the crop using left mouse button with an empty hand, knife or scythe to harvest. When fully mature, crops yield multiple onions and at least one seed when harvested. Harvesting immature plants yields fewer onions and may not provide a seed.