Houseplant care can be tricky, especially with every species requiring a slightly different level of upkeep. So, when Elho released their new Smart Pebble houseplant monitor in January, I was ...

The century plant takes 25 years to grow a flower. Then it dies. Lots of agaves do this! Pebble plants (Lithops species) only have two leaves, and they look like the pebbles on the ground next to ...