The Queen of the Night cactus plant is one of Marie Selby Botanical Gardens’ crown jewels, drawing close to 400 people last year to witness its one-night-only birth of spectacular blooms.

The Sarasota garden sent out a notice this week that it will have a free viewing of Selenicereus, the night-blooming cactus, from 7 to 11 p.m. But they don’t know which night it will happen yet.

Sounding like a labor and delivery nurse, a spokeswoman for the gardens said their botanists monitor the plants every day at the end of May and early June to see how close those blooms are to delivering. When they are in active labor, they send out the alarm.

Nancy Seijas-Kipnis, vice president of marketing for Selby, but they can’t make it official until the day-of when the buds on the cactus tell them it’s sh

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