Balmung Server (maybe XIV) First: Rank 20 Chocobo?

[Erendis]

Thavnarian Onions became available in 2.3. So right around 2 months.

They became available at least 3 if not 4 weeks after patch 2.3, so very close to patch 2.35. There was a lot of crossbreeding involved and onions themselves take 10 days to grow.