Croton plants develop their best colors when grown in bright light. As houseplants, they must be situated in a sunny window. They will tolerate medium light indoors, but won’t grow much and foliage may revert to plain green. Green, yellow, maroon, peach, orange – if there was ever a plant rainbow, this would be it. A showstopper for any indoor space, the Croton Petra plant purifies air like a pro and looks like a Baroque style painting while doing it. The colourful variegation in its stunning leaves changes colour depending on light and age of the leaf.