Space might be an extreme example, but cramped, dark dwellings exist ... In Levine’s experiments on Earth, red light worked well for the slender flowering plants Arabidopsis.

It's especially important to have plants with colorful ... gazillions of coral bells with red foliage to choose from. This one grows to about a foot tall with dark purple almost black foliage.

Dark and Dangerous: These plants aren’t really dangerous ... Really, this plant is disgusting, with black-red hooded flowers and a long, skinny black tongue. A single voodoo lily in all its ...

Who doesn’t like a plant with a dark green leaf and red berries during the holidays? These common plants could be more toxic than you think. Holly, inkberry (aka winterberry) and yew are three ...

But even longtime residents might be surprised to know that their dark red clusters of berries are ... Eastern spice blend of za’atar. The plant has many traditional medicinal uses, as well.