Part 7/7:
From this experiment, the conclusion is clear: for optimal onion growth, a combination of wider spacing and adequate fertility is crucial. However, even a smaller space can still yield reasonable results when using grow bags.
If you find yourself limited in growing space, don't be discouraged; the quality of your harvest can still be impressive even in confined settings. Ultimately, the choice of technique should align with the available space and personal gardening goals, but for those who can, maximizing spacing and introducing fertilizer into the mix appears to be the way to go.
For future gardening endeavors, experimenting with different methods can yield useful insights and improve overall crop quality. Happy gardening!