Q.What Should Moisture Meter Read For Pieris?
I have a Japanese Pieris Insterstella. What should my moisture meter read and at what depth? I grow in 12×12 container.

Certified GKH Gardening Expert
That isn't a very big container unless your Pieris is very young. The soil needs to be kept moist but it must be well drained. If using a moisture meter, water when the meter's gauge is right between moist and dry. You don't want to keep it saturated, but you don't want to let it dry out, either.
https://www.gardeningknowhow.com/ornamental/shrubs/japanese-andromeda/grow-japanese-andromeda.htm