Thanks. Yes I focus stack for the macro shots. The view camera has a particularly shallow depth of field. I then meticulously erase the background rather than use quick and dirty techniques. I want every pixel that is real to stay right where it is, and simply get rid of artifacts. Thanks for noticing.
The big plant images are actually multi shot composites, stitched together. These also require much hand work to get perfect. It is a labor of love and I am pleased with the sense of reality that the images have, particularly in person. They are very calming.