The 66-inch plant, named Spike, has been closely watched since last week. So far, more than 36,000 people have come to see it.
A spokesperson for the Chicago Botanic Garden said Monday that the growth of the plant has slowed, which could indicate it is ready to bloom any day now.
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Visitors will have only a few hours to experience the flower and its stench, which has been likened to a mixture of limburger cheese, garlic, rotting fish and smelly feet. The odor is strongest in the early morning.
Once it blooms, the garden will stay open until 2 a.m. on bloom day only.
To view the flower's live webcam, click here.