Fran wrote:
plantify.co.uk wrote:

We’re having a debate in our office over the difference between ‘cottage
garden’ and ‘informal garden’ styles. Would you say that these are two
different names for the same style, or are there plants that are
specifically ‘cottage garden’ plants – and if so, what defines a cottage
garden plant?

two names for the same style

Exactly... like the difference between an A cup and a training bra.