Herbs form the abundant portion of plant diversity and contribute a major section of global biodiversity. Many herbs are known for their medicinal properties. People around the world especially in India are keeping these plants in their home garden for their immediate availability when in need. This study was carried out in several geographically isolated pockets of the Palayamkottai region of Tirunelveli district, Tamil Nadu, India. The present study revealed that a total number of 149 plant species belonging to 131 genera coming under 58 families have been available in the home gardens of the study area. These plants have been used in the treatment of various ailments such as fever, cold, cough, rheumatism, skin diseases, scabies, diabetes, cancer, jaundice, malaria, piles, sexual complaints and antidotes for poisonous bites. The traditional medicinal plants from the study area are helpful to get relief from several diseases which are cost effective and without side effects. Growing herbal plants in the home gardens is an alternative form of conservation of biodiversity too.

Keywords: Herbs, plant diversity, Palayamkottai, medicinal plants and home garden.