Do I need to winterize a Rose of Sharon?
I have one 3 foot tall Rose of Sharon that was just put into the ground in August. Does it need to be winterized in some way to protect it from frost?
Clackamas County Oregon
No. If you still have the tag from purchase it should have a name like Hibiscus syriacus. https://en.wikipedia.org/wiki/Hibiscus_syriacus These plants are very hardy (they grow in Eastern Oregon where it gets much colder. These plants should not be confused with tropical hibiscus, https://en.wikipedia.org/wiki/Hibiscus_rosa-sinensis
The two are closely related but have different tolerances to cold.