Multiple choice general knowledge Germany Willow Herb Calla Lily Iris Knapweed Reveal answer Fill a bubble to check yourself D Correct answer Explanation The national flower of Germany is Knapweed (Cornflower/Centaurea cyanus). Willow Herb is associated with the UK, Calla Lily varies by region, and Iris is France's national emblem (fleur-de-lis).