The latest location of Flower Child, Sam Fox’s fresh, healthy fast-casual concept, is set to open its doors Wednesday at Desert Ridge Marketplace in north Phoenix. The restaurant, which focuses on build-your-own plates, bowls, wraps and salads that feature veggies, grains, fruits and healthy proteins, will be Fox Restaurant Concept’s 10th Flower Child location. The fast growing concept also has options to open six more locations in the near future in Colorado, Georgia, Maryland, Texas and…