they're not ultra-rare, nearly every major botanical garden in the world has one. They all bloom roughly on a schedule, about 5 of them around the world every year (beyond the fact they also grow in the wild in Sumatra).<p>If you've ever stood by a blooming plant of this species, it's quite an experience. Not only is it huge, you get occasional "wafts" of smell, which alternates between feces and death.<p>Fun fact, the scientific name means "malformed penis".