Additional Services-what to charge

Good morning, 

I am a new business, about two years old.  I have mostly stuck with my basic services of Lawn Mowing, edging, trimming and blowing everything clean.  However, i recently rebranded and updated a list of new service.  Mulch jobs and flower bed weed clean out, so Weed and bed Maintenance.  My question, how do you all quote mulch jobs or weed clean out like this? I have searched only and see so many different ways, figured i would ask here.  Just looking for tips and tricks.