Here is a marketing idea for Arbor Day. The concept is you are building a positive image in your community and you will be meeting many potential customers. You have a better chance to sell them on other services, once you meet them in person. You can survey their yard and mention other services they may be interested in.
Possibly find a supplier of saplings you could get in bulk and then hand out these flyers in your area. Also maybe contact your local newspaper to announce you are trying to help the environment by planting free trees for Arbor Day. That should help get you some press coverage.
How can you edit these files? The simplest way would be to use a program that can edit pdf files. Another idea would be to print out the pdf file without the logos then use another program to add your text and logo in the proper position and run the flyer through the printer again.