Jade Rose is really aggressive. Please consider restricting it to sand blocks only, not sandstone, at least a few blocks apart, and no more than say 5 in a 100 block area. As it is, they're actually growing on top of each other and displacing themselves.
Deer seem to be spawning in front of player-placed background walls. Found one in a closed tower the other day. It also seemed to fly up the side when I got close; it's an unfinished tower, so there are no stairs, platforms, or ledges inside, and no furniture either, so it wasn't jumping on anything.