Sue, you've got a good idea there and I'll be making it workable to do just that.
My thinking is that the moderator of the entry will be able to add sections of information, and populate each section with whatever you want.
So, you could have a section at the top called "Introduction" in which you can introduce the plant. You could then create a section called "History" in which you talk about the history of Roses. And on and on until you've got everything in there you want.
I plan to make it so that you can add photos into it, just like a post in the threads here.
But the main point will be that it will be very flexible, since so many different kinds of plants will need different kinds of sections of information.