Hm, I thought they did mention that fact during one of the potato segments. It doesn't really seem worth it to back and check though. Potatoes were indeed physically planted in the Tuileries gardens--by order of the Commune, I think.

That's largely true, though the segment on the "Revolutionaries" seemed to be amalgamating bourgeois and working-class Revolutionaries, so the costumes were a bit odd as a result of that. (And, somewhat tangentially, I have to say the guy--whatever his name is--made a better Revolutionary or muscadin than he did Louis XVI, at least in the realm of facial hair, which, while probably not particularly authentic for anyone in this period, goes far worse with powdered wigs than with one's natural hair.)