What are perennial herbs I can grow
I presently grow oregano, thyme, tarragon, and sage. What other perennial herbs?
Here is a list of perennial herbs that should be hardy in your zone (learn about zone here: https://www.gardeningknowhow.com/extension-search/ http://lemonverbenalady.blogspot.com/2012/03/readers-request-list-of-perennial-herbs.html
There are many more such lists around the net.