Valak Mountain - the following locations have the highest spawn rate (19%) for Ether Plum:
- Jakt Geyser area
- Sealed Tower area
- northwest of Mechonis Wound
- the large area north of La Luz Church
- Ignia Hill area
- Great Glacier area
- the edge of the cliff at northwest of Bagnar Snowfield. In order to access the area, go to the Jakt Geyser. Stay in the water until the geyser pushes the party up to higher ground. The party will land on the pool of water. Head to the end of the narrowing passage to find the spawn point.