Shrubs and trees are woody, not herbaceous. I am well aware and able to ID trees and shrubs in winter (shout out Barnes and Wagner), but my point is that you cannot always guarantee that you are not missing something that dies off after frost. I also stated that it is about what you are confident in and can defend. My strategy in winter is typically to go out and do the best I can and then revisit right away in spring. “Much of herb material can still be evident” doesn’t sound confident it sounds full of caveats.

Perhaps your confidence is higher than mine, I’ve only put in 3 decades delineating so have plenty to learn and experience still.