Preheat oven to 400°F. Place beets in a baking dish and cover with foil. Roast for 45 minutes to an hour until easily pierced by a fork. Allow to cool completely then peel beets and cut into ½-inch cubes.
In a large bowl, combine beets, tomatoes, hazelnuts, onions, half of the benne seeds and garlic.
Meanwhile, in another bowl, whisk to combine hazelnut oil, rice vinegar, and orange zest. Add marinade to the beets and gently toss to combine. Cover and refrigerate for at least one hour.
To plate, divide poke between serving plates. Garnish with reserved benne seeds, chamomile flowers, microgreens and spring onion blossoms, if using.