DENVER (AP) — The Denver Botanic Gardens' corpse flower is expected to bloom in all its rotting-corpse-smelling glory in early to mid-September.

The Denver Post reports horticulturalists at the Gardens warned there is always the possibility that the bloom will be a bust, but the 18-year-old plant is enough of an anomaly to draw crowds.

The pungent flower blooms only once every 3 to 15 years. The bloom lasts for up to 48 hours.

The Botanic Gardens will be open for regular hours during the bloom, from 9 a.m. to 8 p.m. On bloom day, members can turn up an hour early to get the first sniffs.

The bloom boasts a stench said to smell like rotting flesh. The smell, intended to attract flies and carrion beetles for pollination, gets stronger in late evening.

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Information from: The Denver Post, http://www.denverpost.com