Toss nectarines with 1/4 cup Lemon-Poppy Seed Dressing.
Layer gourmet mixed salad greens, nectarines, strawberries, and next 4 ingredients in a large glass bowl. Serve immediately, or cover and chill up to 8 hours. Toss salad with remaining 1/2 cup dressing just before serving.
*1 1/2 cups halved miniature heirloom green tomatoes may be substituted.