01 - In a medium saucepan, bring 3 cups water and 1/2 teaspoon salt to a rolling boil. Add the rinsed farro, reduce heat to a gentle simmer, cover, and cook for 25 to 30 minutes until tender yet still pleasantly chewy. Drain any excess liquid and spread on a sheet pan to cool completely.
02 - Working over a bowl to catch every drop, carefully segment the orange and grapefruit using a sharp knife, cutting between the membranes to release clean supremes. Set the segments aside and reserve 2 tablespoons of the collected juice for the dressing.
03 - In a small bowl, whisk together the extra-virgin olive oil, reserved citrus juice, fresh lemon juice, honey or maple syrup, a pinch of salt, and several grinds of black pepper until emulsified and well combined. Taste and adjust seasoning.
04 - In a large mixing bowl, combine the cooled farro, halved cherry tomatoes, thinly sliced red onion, arugula, chopped parsley, mint, and dill. Toss gently to distribute the herbs and vegetables evenly throughout the grains.
05 - Arrange the citrus segments and diced avocado over the farro mixture. Drizzle the prepared dressing over the top and fold everything together with a gentle hand, taking care not to crush the avocado or break apart the citrus supremes.
06 - Transfer to a serving platter or individual plates. Garnish with additional fresh herbs if desired and serve immediately while the farro is at room temperature and the avocado is freshly cut.