Pruning Pieris Japonica(lily of Valley) Shrub
I have three beautiful Pieris shrubs (also called Lily of Valley Shrub) They have white bell shaped flowers during the spring. I have read that in order for them to fully flower next year, I should prune the stems or seeds that are left over after the bell flowers fall off. How do I do this? Cut back to where? Is this truly needed?
Any other care tips would be appreciated.