I submitted a proposal to add the cultivar Lucretia Hamilton so it should show up in the database in a little while.
Anytime you want to add a plant you can submit a proposal to add it. Just scroll to the bottom of the database page and you will see an area that says Add a New Plant to the database, click on that and enter the information and it will go into a queue for the moderators to approve. It should show up within a short period of time and you will get a message letting you know it's been added.
