Windwheel Asters can be found exclusively within the Mondstadt Nation.
How to Obtain
The following NPC gives Windwheel Asters after following a certain dialogue branch for the first time:
Windwheel Aster is used for the following character ascensions:
None of the released weapons use Windwheel Aster for ascensions.
- During A New Storm is Brewing, Vind explains that Windwheel Asters cannot grow in places with no wind nor plagued by strong storms, only where the wind is gentle and nourishing. As such, they used to determine how strong the wind was in a certain area based on how well they grew there.