Where did Arthur get red flowers from?

We see red flowers in Arthur's house, Egg observation room, and the house in Grasstown. With the former two it's understood that they were procured by Arthur and Igor respectively to gain the power needed to protect what was important to them, while with the one in Grasstown it's a little less clear. I'm curious about where they all found red flowers, and when exactly. I'd assume after the war 10 years ago? Considering Arthur was only recently killed, and we don't really hear anything about his involvement in that war itself. But hasn't Jenka kept the flowers strictly guarded since then? How did these actors get their paws on it? Idk something to thing about.