Hi
Rebecca is a very pretty Violet. It likes the same kind of conditions Pansies thrive in and prefers mostly sun, especially in areas that are not too hot in summer. Some Viola species do well in shade. Viola odorata and cultivars do especially well with quite a bit of shade.

Rebec - re 'I'd like to know the difference between pansies and viola's'

see this link

Mike

Here is a link that might be useful: Earlier discussion on differences

I just purchased this "Rebecca" Viola cornuta .... and from what I have read, it needs to be in a partial shady area. Is your "Rebecca" different from mine?