A Queensland bottle tree (Brachychiton rupestris) is not something you would typically find in the chaparral of Southern California. Wareheim, who stands well over six feet tall and wears a trim beard and square-framed glasses, raced outside to meet the delivery. The bottle trees on the flatbed were to be the centerpieces of a celebration of Serpentine’s success. Like Hollywood, the plant world is about relationships, so Wareheim spent months returning, buying increasingly larger plants, and gaining the owner’s trust. Finally, a deal was struck, and the bottle trees were dug up.