In mars dasa, ketu bhukti is the sixth sub period. During this period according to virutcha shastra one has to plant seraankottai maram to avoid the bad effects of mars if it is placed in unfavourable houses in one's astrological chart. It is called சேராங்கொட்டை மரம் in tamil.The plant should be planted in public places, temples or in garden
Before a day of plantation, little bit of horse gram should be immersed in water.The plant should be planted in morning during the first saturday of mars dasa ketu bhukti period . After plantation horse gram water should be served to the plant. The horse gram should be given to goat.