PLANTS

Smelling or touching the plants in the Poison Garden at the UK's Alnwick Castle could send you to the hospital.

If you're already growing hydrangeas in your home garden, you can easily multiply the flowers in a few simple steps.

Redwood National Park is home to Hyperion, the world's tallest tree. But you won't find it marked on any maps—and that's for its own good.

The inviting green stuff is supposed to bring us closer to nature. Instead, grass creates a stinging, itchy sensation. What gives?

Instead of tossing out the water you used to boil eggs or vegetables, save the nutrient-rich liquid for your plants.

With a glass of water and a windowsill, you can regrow avocado pits, green onion ends, and other vegetable scraps into new plants.

The state has expanded its trash pick-up services to accommodate the new policy, but many residents are already composting pros.

Simon and Garfunkel sang about herbs, not spices—but that’s not the only difference between the two.

The corpse flower smells similar to rotting flesh, dead fish, or Camembert cheese that’s been left out all night.

Impress your botanist friends by knowing that peanuts are really legumes and cashews come from colorful “apples.”

Wollemi pines have lived on Earth for 200 million years. And without quick action from firefighters, the species' last wild population would have been wiped out for good by wildfires in Australia.

This illustrated map showcases the many beautiful, unusual plant species under threat in the United States.