Plectranthus barbatus, also known by the synonym Coleus forskohlii and vernacular names forskohlii and Indian coleus, is a tropical perennial plant related to the typical coleus species. It produces forskolin, an extract useful for pharmaceutical preparations and research in cell biology.
Plectranthus caninus is a herb in the mint family Lamiaceae, native to east Africa and southern Asia. Under the name "Coleus canina", it is sold and marketed as a natural repellent to cats and dogs (labeled as "Scaredy Cat Plant" and "Piss-off plant"), though no research currently exists that supports that usage. These plants root easily from cuttings or from just touching the ground. They like full sun.
Plectranthus esculentus is a perennial dicot herb that is a member of the mint family . This herb can grow to be as tall as 2 metres. Some of the branches on the base bend down and grow into the ground that then can form oblong tubers, which are the fleshy underground stems.