Mix dressing ingredients except poppy seeds in a small food processor, blender or by hand until emulsified. Add poppy seeds, then taste and adjust salt and pepper.
Chop herbs as needed.
Combine herbs and lettuce then toss with dressing.
Sprinkle with flowers if desired.
I am not a health professional and nutrition data is calculated programatically. Accuracy may vary with product selection, calculator accuracy, etc. Consult a professional for the best information.