Should I cover the roots of my roses?

I have a selection of roses growing in the garden, they seem to be at different stages and a variety of types, but all appear to be growing fairly well. Some of them have what looks like a large greyish brown root exposed (almost looks dead compared to the rest of the plant). A neighbour advised me to cover the roots with a pile of ground to protect it. I did this, but then my mother-in-law came along and said she thought they shouldn't be covered like that because they might rot. So who's right?

 

Good morning @BabyBee

@wiseowl is one of our knowledgeable members on the topic of roses so, hopefully, he will be along soon and be able to give you his sage advice

 

Elloo BabyBee,Welcome to GC....I would cover the roots but keep the actual stem of the Roses clear of soil

 

Thanks for your advice! I'll check them tomorrow.