[header] How to hire a tree trimmer [title] Call local tree trimmers listed in the phone book or found online. [step] Set up appointments with them to get price estimates for your job and ask for references to their previous work. [substeps] Talk to these past clients and ask if you can see what kind of tree maintenance they received. 
Find out their impressions of the service you are considering. [title] Ask your family, friends, and neighbors which tree-trimming service they use or can recommend to you.