Thousands of people have queued up for a chance to smell the "stench of rotting flesh" given off by a rare "corpse flower".
A titan arum finally flowered on Saturday for the first time in 11 years at Cambridge University Botanic Garden.
The bloom lasts just two days days and emits its smell to attract pollinators.
A webcam trained on the plant as it prepared to open was so popular it crashed, and 1,000 visitors arrived in the first few hours after it bloomed.
This latest specimen has been nicknamed "Tiny Titan" as it is well below the normal flowering weight of 15kg (33lb).
It finally began to bloom late on Saturday afternoon.
The pungent plant emits its foul odour mainly at night by heating itself up to about 40C (104F).
"The heat helps to distribute sulphurous compounds - the atrocious stench - across vast distances in its native Sumatra to lure its pollinators, thought to be carrion beetles and blowflies," Prof Beverley Glover, director of the garden, said.
"The stink, which comes in pulses through the night, has been described as being like 'rotten eggs', 'dead donkey', 'dirty laundry' and 'smelly feet'," she added.
A titan arum, by any other name
A titan arum, by any other name
would still stink...
“If you trust in yourself, and believe in your dreams, and follow your star. . . you'll still get beaten by people who spent their time working hard and learning things and weren't so lazy.”