In a 7 quart crock pot, add vegetable broth, diced tomatoes, tomato sauce, tomato paste, water. Stir.
Dice potatoes, squash, zucchini, bell pepper, mushrooms, onion into small pieces and add to crock pot.
Add chopped garlic, cajun seasoning, salt and pepper.
Cover and cook on high for 5-6 hrs,or low 8-9 hrs.
Add corn and orzo the last hour of cooking.