The first two photos are of Witch Hazel. It is known by several names: American witch-hazel, Common witch hazel, Striped alder, Tobacco-wood, Spotted alder, Water-witch, Snapping Hazelnut, Winterblooms and Witchhazel Witch-hazel! Its botanical name is Hamamelis virginiana.
We had parked our car on the other side of the barrier at one of the entrances. Though people are welcome to stay in the garden until 6.00 p.m. after which it starts to get dark, the parking lot closes at 5.00 p.m. We didn't arrive until 4.40 p.m. and thought it wise to park outside on the road that leads into the garden.