General

Twilight Perion: Weathered Rocky Zone

Note that Neglected Garden doesn't seem to have event drops, if you're also farming teabags and Kaliedo tickets.

Future Ereve and Twilight Perion.
ToT works well as well

I train at Road to Oblivion 5, root abyss map is good too, but it doesn't seem to drop any tea.

Temple of Time or Neglected Garden (assuming u don't lag often).

Mutant Snails or Neglected Garden.

Root Abyss - Neglected Garden
Temple of time - Road to Oblivion 4 or 5

tots/future hene