I've updated the site ...
I'm now on the newest version of this particular content management system (CMS). That means that unfortunately, the search doesn't include the plant names anymore; to find a particular plant not mentioned anywhere else on the site, you'll just have to try the URL ... henriettesherbal.com/plants/[whatever genus you wish to check on] + .html .
However, if you're logged on, any URL not found will net you search results - lovely, no?
Plus a few more minor odds and ends.