Was Trask's costume expressly designed so that he would look like the Wicked Witch of the West out there in the woods?
I have trouble believing that the Tree Test was ever actually used determine whether a person was a witch. It would have been so rarely successful! The famous test is to throw the person into the water. If the subject floats, the water has rejected her because she's a witch. If the subject drowns, she's innocent. I know that I would be judged a witch because I float easily, and at the other end of the spectrum there was a guy named Horace in my life-saving class 35 years ago who sank easily. (Whenever we needed a victim to rescue, the teacher would call out, "Horace, sink!" and he would dutifully go under.) So I know that the water test could get you a witch occasionally, but not so often that people would say it was a set-up. But the tree test seems to be almost invariably doomed to failure, especially when you've got a witchhunter as slovenly as Trask was. So what did Trask do when, morning after morning, he found tree after tree alive and kicking and asking what's for breakfast? No wonder he had to go to the wilds of Maine to find a witch; he must have been a laughing-stock in Salem.
I have never understood why Vicky didn't tell Barnabas and Nathan just to leave her tied to the tree so that Trask would be clearly foiled and discredited in the morning. Heaven only knows what Angelique would have done to her - but the assumption of Barnabas, Nathan, and Vicky at this point was that there was no witch, so the possible actions of the real witch were not an issue. And why did they hide her in the drawing room at the new house? Just the other day, Barnabas and Josette had ridden over to look at the new house, and apparently it was being actively worked on. They should have taken Vicky to some far-off room in the West Wing - or else she should just "happen" to have chosen her own room from 1967, where she knew there was an escape route if somebody approached the room.
I loved the closing credits, with the bucket of dry ice steaming away behind the dead tree.