1) I would caution strongly against linking to other sites that promote your competition. Instead of linking to angies list, why not put those reviews on your testimonials page that is currently blank.
2) Your 100% service guarantee button should like to a page that explains your guarantee. Currently it goes to a website that promotes other landscapers.
3) make sure to read through your content. There are some typos.
4) put your "our services" on the left bar where you have a blog roll. I don't think your blog roll ads any value to a visitor.
There is a lot of work to do here, but this will help you get started. I am glad you have decided to get a website going, it is a step in the right direction.
To close I would ask you to weigh your time and results verse a service that would provide you with a quality website. Your valuable time might be better spent doing another estimate or handing out some more flyers. It does not cost as much as you may think.
Best of luck to you.