In a medium bowl, toss the beef cubes with flour, salt, and pepper until evenly coated.
Place the flour-dusted beef into the bottom of a 6-quart slow cooker.
Add the potatoes, carrots, onion, and garlic to the slow cooker.
Whisk together the beef broth and Worcestershire sauce, then pour the mixture over the meat and vegetables.
Sprinkle the dried thyme and rosemary over the top.
Cover and cook on Low for 8 to 10 hours or on High for 4 to 5 hours until the beef is fork-tender.
Stir in the frozen peas 15 minutes before serving to allow them to heat through.
Adjust seasoning with additional salt and pepper to taste before serving.