Cook the bacon in a large soup pot until crisp. Remove with a slotted spoon. Add the onions, and garlic, and cook until soft.
Stir in the vegetables, add the thyme, and broth. Bring to a boil, reduce heat.
Simmer for 30 minutes until veggies are tender. Puree using a blender or immersion blender and add the lemon juice. Transfer back to pot, heat through and serve topped with reserved bacon.