Whisk 6 tablespoons orange juice, ¼ cup oil, 1 teaspoon honey, ¾ teaspoon cumin, ¾ teaspoon salt and the grated garlic together in a large bowl until combined.
Add 6 cups cabbage; toss to coat. Let stand at room temperature until the cabbage begins to soften slightly, about 10 minutes.
Add rinsed black beans, radish matchsticks, ⅓ cup onion, ¼ cup cilantro and ¼ cup pepitas; toss to coat evenly.
Gently fold in the chopped avocado.
