Wash and thoroughly dry the herbs, then gently pull the leaves from the stems.
Toast the sunflower seeds and sesame seeds in a dry frying pan over low heat, stirring frequently until just golden. Place in a small bowl and allow to cool.
Place the salad leaves in a large bowl. Remove any stems that remain on the leaves. Sprinkle the mint, parsley, cilantro, and basil over the lettuce. Toss gently. Add the sliced radishes and toss again.
Combine the olive oil, lemon and orange juices, honey, red wine vinegar, salt and pepper in a measuring cup and whisk to combine. Taste and adjust the seasonings. You should have about 1/2 cup dressing.
Sprinkle three-fourths of the seeds over the salad (save the rest for garnish), and toss to mix.
Just before serving, toss the salad with desired amount of dressing and move it to a large shallow bowl or serving platter. Sprinkle with the remaining sunflower and sesame seeds. Serve immediately.