Master greenfingers is an aura that can be bought from the Loyalty Programme Shop for 29,000 Membership Loyalty Points. Upon activation, it will prevent Farming crops from becoming diseased in addition to providing a 7% chance of increased crop yields. The aura will remain activated for 20 minutes and has a recharge time of 1 hour.
Note that crops have the possibility of becoming diseased at the end of each growing cycle. The number and length of growing cycles varies with each crop. For example, herbs grow in 4 cycles of 20 minutes each, providing at least 4 opportunities for the crop to become diseased. Therefore, this aura can be used to prevent disease in one of those cycles for each crop, but cannot be used to prevent disease completely.