Thanks for the responses, Elsa and Lucy.
Daisy, I enjoy making crosses and so often find the intermediates
to be very beautiful. I think if I thought that none of them could be fertile, they'd be much less desirable.But it sounds like intermediates can be parents. Thanks again.
note: I just did a search in the database for intermediates that I have in my plant list.
Several have children ! Alberta Clipper has 10!
"Depends on the plant" - Exactly, Lucy.