Scientists discover that fast-changing cactus flowers, not size or pollinators, are behind the rapid evolution of new cactus species.

My colleague and I have published a new study of cactus flowers which may help explain the conundrum. For more than a century ...

The cactus on your windowsill may grow slowly, but new research shows that cacti are surprisingly fast at creating new ...

Add Yahoo as a preferred source to see more of our stories on Google. Denise Hasse / Getty Images Christmas cactuses bloom in winter, when the days grow cool and short. While low light levels trigger ...

Add Yahoo as a preferred source to see more of our stories on Google. With it coming in eye-catching bright pink, red, purple or white hues, it's the perfect way to brighten up a room over the darker ...

Add Yahoo as a preferred source to see more of our stories on Google. A cactus on a shelf next to a toy cactus. Cacti are known for their prickly exterior. But not so much for their flowers - except ...

This cactus does not have any thorns, you see. It is a special breed of cactus called prickly-pear. It will blossom with yellow flowers and give pear-like fruits. You have to share the flowers and ...