Thyme is TOUGH!
Just a little story: Thyme is my absolute favourite dried herb. I have 6 plants (Thymus vulgaris) in my garden and decided to try growing one in a pot outside this summer past. It went OK but the pot was too small and the plant dried out regularly and became root-bound. Around harvest time I pulled it out of the pot and threw it in my bin of recovered potting soil, figuring that was it for this little experiment. The roots were so spread out it came out in one solid clump like a popsicle and I didn't feel like breaking it up, so I just threw it on top of the soil, put the pot to the side and forgot about it.
Cut to a couple of weeks ago. I was outside gathering some frozen leaves for my worm bin, and I went into the shed to see my now thoroughly frozen thyme plant. We had seen below freezing temps for a couple of months and, being in this shed the plant had not received a single ray of sunlight for 3 months. I saw it and decided to make it part of another experiment. I separated it from the soil it was sitting on top of (taking a chunk out of the side since it was frozen solid) and threw it into its old pot, bringing it inside to thaw out. Once thawed I threw some worm castings on top and watered it, then put it in a window.
After pruning, it's clearly still alive and what's more it's sprung back to life! It's putting out about 1/2" of new growth a day it seems.
Now I suppose this shouldn't come as much of a shock since it survives in my garden, which is now frozen solid and sitting under a foot and a half of snow, but seeing this plant - that was dry and under-watered when I neglectfully removed it from its pot and left in a place that then received zero light and froze for several months - immediately come back to life is pretty amazing to me. Thyme gets my vote for not only best pantry herb but spunkiest garden plant.