If I had these two interests I would contact my local library and see if they would let me put on display of my photos. Then I would put the photos up on your lawn care business website. I would make a link to explain the photos and show how it is one of your interests. Then you could send out press releases to the local paper about your presentation at the library and how “Local Landscaper shows off his photo collection.” Build up the landscaper part to bring people to your lawn care website. Possibly take pictures that would be associated with grass, lawns, landscapes etc. This could help you tie it all together.
You could also every once in a while maybe help someone out by doing the photos for free for a wedding of a local resident that has been hard on their luck. You could really become a local hero for doing such good deeds.
Or, maybe have something set up where you could do holiday family portraits for free for your customers? That could really help you build up customer loyalty! Why not do free holiday Santa photos? Have Santa sitting on a mower as his sleigh? And then upload all of the pictures to your website so the family members could download them for free and visit your site at the same time.