Heat the olive oil in a large pot over medium heat.
Add the ground beef and cook until browned, breaking it up with a wooden spoon as it cooks.
Stir in the diced onion, carrots, and celery, sautéing for 5 minutes until the vegetables begin to soften.
Add the minced garlic, dried thyme, sea salt, and black pepper, cooking for another 60 seconds until fragrant.
Pour in the beef bone broth and add the pearled farro, stirring to combine.
Bring the soup to a boil, then reduce the heat to low, cover, and simmer for 25 to 30 minutes until the farro is tender.
Stir in the chopped kale and cook for 2 minutes until just wilted before serving.