In high altitudes of Kullu district of Himachal Pradesh, about 45 traditional cultivars of 15 different crops of millets, pulses, beans, barley, pea, buckwheat, horse gram, maize, wheat, potato and soybean are better adapted to the local agro-climatic conditions in comparison to the HYVs. Abundance, sown area, cultivation history, yield, bio-physical characteristics, economics and agronomic practices were studied in 2007-10 followed by the characteristics of each cultivar such as size/color/taste of the seed/fruit/tuber, nutrition value, and resistance to pests/insects/pathogens/water stress. Participatory research with farmers revealed that agricultural biodiversity can longer be protected because of fast invasion of monoculture-based farming systems in mountains, which is indirectly linked with growing unsustainable consumerism. Analysis in context of consumer-commodity relationships indicated that the consumer preference of lucrative foods has led to absence of market for food grains, pulses, oilseeds and vegetables of traditional cultivars in most of low-altitude mountain areas. As a result the monoculture with chemical farming has succeeded and the farm diversity declined. Changing pattern in consumerism is believed to have affected negatively the farmers’ behaviour of growing the traditional cultivars of genetically-superior food crops. Can the green consumerism reverse the trend of erosion of agrobiodiversity, and provide the farmers with incentives of continuing to grow multiple crops with traditional varieties? Literature on green consumerism shows that there is a potential demand for products of traditional cultivars in new emergent economies including India, though the current food market is not responding to fully meet the needs and preferences of eco-friendly consumers. Product labeling, certification and quality control are some issues that diffuse the responsible consumers, thus causing setback to very market for products of traditional cultivars. This paper so recommends that by developing compulsory or voluntary labeling and certification to enhance information for potential green consumers about the products of traditional cultivars and by setting low-cost marketing channels to transfer premium price back to farmers could help farmers to sustain the adoption of traditional cultivars as against modern varieties. It would help conserve in situ the agrobiodiversity in Himalayan mountains, and to maintain resilience of agro-ecosystems for mitigation of the effects of climate change.