Yes, you need an account.
If you want to reproduce a protected variety the answer is very simple: you can't.
But if you just do it with a plant, for your own use, as long you don't sell it or give it away, if you ask my opinion, I don't think anybody will care. Who will fill a lawsuit for a guy that in his backyard has reproduced a patented variety? It isn't worth the money spent on the lawyer.
But as I said, you can't legally reproduce it anyway.
In Europe there is an exception to this rule: you can reproduce anything that the patent holder isn't selling.
(I've yet to understand the logical basis of patenting a plant breed, but this is another matter)