It is activated for 20 minutes and has a recharge time of 1 hour. Also, as with all auras, if the account using it is logged out while the aura is activated, the timer will continue to run. 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 prevent disease in one of those cycles for each crop, but cannot prevent disease completely. Trees planted using the aura can still become diseased. Patches that cannot be protected from disease by a gardener will be protected by the aura and will also say "A nearby gardener is looking after this patch for you" des