What is the nutritional value of flowers for rabbits? Should they be reserved as treat foods?

Following the advice of sites like this I am feeding around 1.5 cups of different leafy greens daily, and every few days I add a little bit of non-leafy veg and a small bite of fruit.

If I add flowers to that mix, which part would they fit in to? I am guessing non-leafy veg? How many flowers can I feed him per day?

Flowers are mostly used as treats or hay toppers. Meaning to sprinkle a bit of it on top of hay to entice buns to eat hay. A lot of bun parents do this if they have a bun that isn't too keen on hay. For others that have buns that eat their hay they use flowers as treats.

Great, thank you *thumbs up*

Harry loves his hay so I will just give him flowers every now and then for variety.

BB sells a great flower variety/hay topper. I buy the rose and cranberry mix from them. Skipper loves it. BB sells great quality products.

A lot of their stuff looks great but I am in the UK

This is something I have wondered about too... Can bunnies eat any type of flower or are some poisonous? I know in the case of cats you need to be really careful what plants you bring home.

Some can be poisonous. I know roses and marigolds are okay.