Hello, would it be illegal to sell scions (not plants) of a patented variety of mango such as those of Zills nurseries (coco creme, etc...)
This is not legal advice, but as far as I understand it, either propagating or selling material that can be used for propagating a patented plant would be a violation of their patent rights. That's a matter of civil liability, not a crime, at far as I know. So they could sue you or send threatening letters, or both.
" Section § 506 of the Copyright Act authorizes criminal prosecution for a party who willfully infringes a copyright when the infringement:
is for purposes of commercial advantage or private financial gain,
results in the production of over $1000 worth of illegal copies; or
involves a work intended to be commercially distributed (example: an unreleased film or music album).
Penalties for criminal copyright infringement can be found at 18 U.S.C. § 2319. Fines for criminal copyright infringement range from a minimum few thousand dollars worth up into the millions. Criminal copyright infringement penalties can even extend to to prison sentences of up to ten years in federal prison."
You can definitely go to prison for this violation. Will you? Unlikely, but I would never take that chance.
If it's just for your own use at home, the chance of them going after is you is slim. But getting paid for it will definitely put you in the spotlight..