Instead of editing my previous post, I'm adding a new one because I think people are less inclined to notice edits. The more I think about it, the more I believe the "Comments" line should be renamed "Lineage." Calling it "Other Miscellaneous Information" would be almost as strong an invitation for personal comments as "Comments" is.
I haven't added parentage info for the roses, except in the case of sports, but that might be a fine rainy-day project for someone else down the line.