Mentha oil crop sowing season starts during February–March every year. The crop takes 90 days to mature (vegetative) and produces first flowers. This is the best stage to harvest. The crop harvesting is done during May & June. Mentha leaf is a commercial part of the plant including young flower buds, which contain volatile mentha oil. Its leaves are sun dried for higher oil yields. Leaves and flowering tops give the highest yield. Distillation of dried leaves is cheaper than that of fresh leaves. By steam distillation and filtration, a golden yellow volatile oil is obtained.

Mentha oil crop sowing season starts during February–March every year. The crop takes 90 days to mature (vegetative) and produces first flowers. This is the best stage to harvest. The crop harvesting is done during May & June. Mentha leaf is a commercial part of the plant including young flower buds, which contain volatile mentha oil. Its leaves are sun dried for higher oil yields. Leaves and flowering tops give the highest yield. Distillation of dried leaves is cheaper than that of fresh leaves. By steam distillation and filtration, a golden yellow volatile oil is obtained.