Recurring charges can be setup on a per property basis. From the Property Details page go to Preferences under the property drop down.
There you will be able to add recurring charges for both the owner or the current tenant. Click the blue + Charge button.
The New Recurring charge form is every similar to a new charge.
The date you would like the recurring charge to first occur.
How often you want the charge to occur (1 month, 2 weeks, etc).
The charge note has some auto insertion options. [month] will be replaced by the month for each instance of the charge. [year] will be replaced by the year for each instance.
Gardening Services for [month] [year].
The note for December 2015 would be generated as "Gardening Services for December 2015".