If pickles make the list, cucumbers probably do, too.
I found a good list. Here ya go:
Apple, Asparagus, Beet Root, Blueberries, Broccoli, Cabbage, Cantaloupe, Carrot, Cauliflower, Celery, Chicory, Cranberry, Cucumber, Garden cress, Garlic, Grapefruit, Green Beans, Honeydew, Hot Chili, Lemon/Lime, Lettuce, Mango, Onion, Orange, Papaya, Peach, Pineapple, Radish, Raspberry, Spinach, Strawberry, Tangerine, Tomato, Turnip, Turnip, Watermelon.
Bon appetit!