Puree the soup with a hand blender until completely smooth. Bring the soup back to a simmer and add the cream. Season to taste with salt and pepper and cook for 5 minutes.
Ladle the hot soup into serving bowls and garnish with fresh thyme and edible flowers.
Recipe by OPSD Il gustoso food blog at https://www.opsd.it/zuppa-asparagi-bianchi/