Put beet wedges in a small bowl; season with salt and pepper and toss with 2 tablespoons vinaigrette; set aside.
Put salad leaves in a large mixing bowl; salt very lightly and dress with 1 tablespoon vinaigrette.
Divide among individual plates or arrange on a platter.
Scatter beets, radishes and fennel over leaves.
Arrange asparagus spears over the top and add egg halves; season eggs with salt and pepper.
Top with herbs and blossoms, if using.
Drizzle remaining vinaigrette over salad and serve.