A vanilla Vanilla

The orchid that produces the favorite flavor has low genetic diversity, may face risk from pathogens

Scientists have now tasted the genetic makeup of Vanilla, the orchid whose pods bestow flavor on ice cream, perfume and rum. Their findings? It’s pretty plain.

FINICKY FLOWER Blossoms of the orchid Vanilla planifolia must be hand-pollinated within 12 hours of opening or pods — and thus vanilla beans — won’t develop.