Hi hon xxx Zucchini is a green vegetable! In the UK here, we call them courgettes, and in the USA they are known as zucchini. You can get them from any supermarket or greengrocers. I may be wrong, but I think they're somehow part of the marrow family, as their taste and texture is very similar.n the UK here, we call them courgettes, and in the USA they are known as zucchini. You can get them from any supermarket or greengrocers.