A very good idea
, but perhaps some tweaking is needed?
The Plumeria parent plant entry lists "related" threads that include the Purslane and Brugmansia forums - but neither of the particular threads mentions plumeria at all.
For me, a link to something that's unrelated to my main quest is worse than a broken link. Scanning through a thread vainly searching for "related" information that isn't there can be very off-putting.