I read your guide, and it is well done - especially mentioning which ones are rumor poisonous, but in fact are only mildly so.

I do have a suggestion - how about listing the most dangerous ones up front, like lilies - I know people who have lost cats to lilies in a gifted bouquet. Maybe a list up top - Deadly • Technically Poinsonous • Safe - and then link each list item further down the page for the descriptive text?