Swamp Thing - Season 1 Episode 19 -

Will's estranged father shows up looking for a rare white orchid that Arcane and his henchman, Graham, has nefarious plans for. Tressa struggles with her romantic feelings for him, and Abigail, working in the town’s greenhouse, succumbs to the poisonous fumes of a certain red orchid, and only the healing powers of the white orchid can save her.