The present paper studied the economics of large cardamom cultivation using primary data collected from a sample of 80 large cardamom growers of Zunheboto district. It has been found that investment in large cardamom is a profitable business. Total cost of cultivation for large cardamom was ` 83188.29/ha and net farm income was ` 251559.65/ha. The values of economic parameters, viz, NPV, BCR, IRR and PBP was worked out to be ` 98129.31/ha, 1.66(over total cost), 35 per cent and 4.3 years respectively, thus, confirmed the economic viability and certainty of investment in large cardamom plantation. Non availability of planting materials on time was the major constraint reported in the study area. The study has emphasized on the need of participatory quality planting material production at village level which will facilitate in effective supply of seedlings at proper time.