Good eye! There are gaps above the door and around the side panels. That is the last thing I need to do before the plants. I have a good strong spring on the door and of course a latch on the other side. So I am going to apply some thick/soft weather stripping to the frame and that should do the trick.
If the snow fell straight down, there wouldn't have been much in there. Notice the pile of snow at the bottom of the door in the second picture. That is because a strong westward wind was plastering the east side of everything. See the Oak to the left in the background. The pile is snow that had stuck to the side and fell off and that is why some of it made its way into the greenhouse.
Plants will go in next week perhaps. It isn't going to stay where it is, but I've got to move it to a nice level spot and was going to position it with the door facing north.
All Cacti are succulents, but not all succulents are Cacti