Begin by going to the home page of the database by clicking on the "Plant Database" link at the top of the blue box on the left-hand side of any page of our site. Then click on "Add a new plant to the database." Fill out the form, submit the proposal, and wait for it to be approved or declined.
Here's a thread about common errors in new plant proposals. I hope it will answer any questions you might have.
The thread "Common errors in new plant proposals" in
Plant Database forum
