I feed leafy greens everyday, but because different greens have different nutritional content and some are very high in calcium or oxalic acid, I rotate between a few different kinds of leafy greens each week. Fruits are high in sugar and sometimes acidity, so I tend to cut up these types of items very small for my guinea pigs to share- same with carrots. It takes them more time to dig for the pieces and enjoy them. Plus one guinea pig can't steal them all. Plan to feed about 1 cup of veggies (and fruits) per guinea pig daily, either in a single feeding or portions throughout the day.
Here are the foods and how often I'd feed them:
- Bell Peppers, rotate colors - Almost Daily (red & orange are high in sugar, feed small amounts)
- Cilantro - Almost Daily
- Romain lettuce - 3 or 4 times a week
- Butterhead or Bibb Lettuce - 3 or 4 times a week
- Red or Green Leaf Lettuce - 3 or 4 times a week
- Endive - 3 or 4 times a week
- Arugula - 3 or 4 times a week
- Carrot - 4 or 5 times a week, 1 large carrot cut up feeds 2-3 guinea pigs (tops appreciated)
- Zucchini - 4 or 5 times a week
- Apple - 2 or 3 times a week
- Chard, swiss or rainbow - 2 or 3 times a week
- Parsley - 2 or 3 times a week (cilantro is better alternative(=)
- Dandelion Greens - 3 or 4 times a week
- Watercress - 2 or 3 times a week in small amounts
- Yam - 2 or 3 times a week
- Grapes, any color - 2 or 3 times a week, I only give a couple per guinea pig, halved
- Pea Pods and Green Beans - 2 or 3 times a week
- Kale, red or green - 2 or 3 times a week (smaller portions, mixed with other greens)
- Celery - 1 or 2 times a week (prefer leaves, stalks need cut tiny to prevent choking on strings)
- Collard Greens - 1 or 2 times a week
- Cucumber - 2 or 3 times a week (mostly water content, zucchini is better alternative)
- Tomatos - 1 or 2 times a week, cut small (acidity may cause mouth sores in high amounts)
- Squashes, all kinds - 2 or 3 times a week
- Corn on the Cob - 1 or 2 times a week, can feed silk and husk if not treated with pesticide
- Pumpkin - 1 or 2 tims a week
- Basil, Thyme, or Dill - 1 or 2 times a week
- Beet Green Leaves - 1 or 2 times a week
- Mustard greens - 1 or 2 times a week
- Spinach - 1 or 2 times a week
- Broccoli - 1 or 2 times a week (may cause gas)
- Cabbage, any color - 1 or 2 times a week (may cause gas)
- Brussel Sprouts - 1 or 2 times a week (may cause gas)
- Banana - biweekly in small amounts
- Oranges/tangerines - biweekly (acidity can cause mouth sores)