Collard greens, berries, cantaloupe, squash and romaine lettuce are great food options for your baby turtle's plant-matter needs. Do not feed your baby turtle iceberg lettuce, as it has virtually no nutritional value. Dark-colored lettuce (such as romaine) and richly colored fruits and vegetables are best. Also, harder-to-chew plant matter, such as carrots or apples, may be difficult for your baby turtle to consume.