This is really cool. I work in the plant industry, and most people don't know this but huge numbers of the plants bought in the U.S. are grown from tissue culture. I would guess it could be in the ballpark of half of all small and medium-sized plants (< 10" diameter), because it brings some benefits when propagating at scale for certain genera. For others, it's too difficult to grow a stable plant from tissue culture, so they need to be propagated vegetatively.
