Broccoli Salad

2 broccoli heads chopped (no stems)
3 celery stalks chopped
3 green onion, chopped
1 bunch red grapes, cut
1/4 pound cooked crumbled bacon
6 T miracle whip
2 T plain yogurt (optional)
2 T vinegar
2 T vinegar
sunflower seeds
salt and pepper to taste
Mix all ingredients except bacon. Add bacon before serving.