I just uploaded a batch of code that changes the way the Lists feature works in an important way:
Starting now, your public view is the same as your control panel.
This means that if someone else is viewing your list, it is the same as always. But when you're viewing your own list, you'll have the blue "add a plant" button, along with all the edit and delete action for each plant.
As part of this change, while managing your plant list, you now have access to all the same snazzy functionality that has always been in the public view. You can restrict your view to certain genera, or view just your "Haves" or "Wants", etc.
Give it a shot and please let me know if there's any usability issues that have cropped up that I missed.