I've noticed since patch 1.6, the respawn times for plants seem to be a bit...off. Some are still respawning normally, while others are a little crazy. The garden beside Honeyside respawned after a week, then when I went in the house, and came back out, it was cleared out. Dungeons seem to be respawning normally though. I've went to four I've previously cleared, and they all had bandits, and more loot. So it seems to just be plants with the problem.

I only noticed the respawn, it's all gone problem in Solitude so far, I have not picked anything in Solitude for a while, looks great when I return, go in a door and come out and everything is gone. A bunch of new alchemists must have moved in some where. It has done that just about every time my first character (Level 75) has gone to Solitude since the patch. The lowest level character did not seem to have a problem, but he has only been to Solitude a few times, and he picked everything anyway.

The Honeyside garden has never respawned for me.