Combine the chopped fresh broccoli, fresh blueberries, finely chopped red onion, dried cranberries, and sunflower seeds in a large mixing bowl.

Toss the ingredients gently to evenly distribute them, aiming for a vibrant mixture, about 3–5 minutes.

Toss the chopped apple with lemon juice in a small bowl for about 1 minute, then fold into the salad base.

In another bowl, whisk together Greek yogurt, honey, additional lemon juice, apple cider vinegar, and poppy seeds until smooth, about 1–2 minutes.

Pour the dressing over the salad ingredients and gently toss to ensure each piece is well coated.

Serve immediately or store in the refrigerator for up to one day, keeping dressing separate until ready to serve.