To prepare salad, combine first 11 ingredients in a large bowl.
To prepare dressing, combine buttermilk and remaining ingredients, stirring with a whisk. Just before serving, drizzle salad with dressing, and toss gently to coat.
this is my go-to salad. It's basic, but the blue cheese dressing is great and it has so many vegies in it, you just know it's good for you.