What vegetables should guinea pigs eat daily?

[Wiggiegrandma]

Hello everyone, what are the veggies my guinea pigs should be eating everyday please? Some people say not to feed Romaine lettuce? Is this true? I keep getting mixed information on google as well.

 

[Piggies&buns]

Safe daily veggies are lettuce (not iceberg lettuce but any other type is fine), cilantro, bell pepper and cucumber

The guide below details further

Long Term Balanced General And Special Needs Guinea Pig Diets