When Is the Best Time to Trim Rose of Sharon?

https://www.gardeningdream.com/when-is-the-best-time-to-trim-rose-of-sharon/ The Rose of Sharon has an interesting history, being neither a rose nor a specific flower. In many cultures, the term “Rose of Sharon” was used to describe a common flowering shrub. The name was taken from the Bible, where it appeared as a descriptor for an unknown plant. In the United States, the most common Rose of Sharon is the purple Hibiscus syriacus, a deciduous flowering shrub from East Asia. However, the term can also refer to the Hypericum calycinum or Hibiscus rosa-Sinensis. But, what is the best time to trim rose of Sharon?