Tulip bulbs multiply slowly by producing small offshoots that take up to three years to bloom. Wild tulips thrive in cold winters and dry summers, but only certain varieties naturalize well in warmer ...

Christmas cactus is a type of jungle cactus that grows naturally in the Brazilian rainforests. For gardeners, they are cultivated as a houseplant and manipulated to bloom during the holiday season.

Original broadcast date: July 15, 2022. "The birds and the bees" may be a euphemism for human reproduction, but procreation of actual winged animals is far wilder. This hour, TED speakers explore how ...