01 - In a medium saucepan, combine the farro, water, and salt. Bring to a boil over medium-high heat, then reduce to low. Cover and simmer for 25 to 30 minutes, until the farro is tender. Drain any excess water and allow to cool slightly.
02 - While the farro cooks, thinly slice the radishes, dice the cucumber, slice the avocado, and set aside.
03 - In a small mixing bowl, whisk together the olive oil, orange juice, lemon juice, orange zest, honey or maple syrup, Dijon mustard, salt, and black pepper until the dressing is emulsified.
04 - In a large mixing bowl, add the cooked farro, radishes, cucumber, arugula, parsley, mint, dill, and green onions. Drizzle with the citrus dressing and toss gently to ensure even coating.
05 - Evenly divide the mixture among serving bowls. Garnish each with avocado slices, crumbled feta (if using), and toasted seeds.
06 - Serve immediately, or refrigerate for 30 minutes if a colder bowl is preferred.