The university says the nearly 6-foot titan arum is expected to open this week, releasing another round of its rotting-flesh smell a little more than two years after it first flowered.
A second corpse flower opened briefly at the greenhouse last May.
A university spokeswoman said cultivators are lucky to have three blooms in three years. Each brief bloom attracts visitors hoping to catch a glimpse or a whiff of it.
The plant expected to bloom soon is nicknamed Woody, after Buckeyes football coach Woody Hayes.