According to the designer (fullahead.org),

this template is tableless XHTML/CSS that validates as 1.1 strict. It uses relative widths so that it handles browser font +/- without any troubles. The vertical plant image is easy to switch for one of your own, as is the accent colour.

Great for sites about gardens, trees, plants, or anything related to nature.

Click here to see this template in action, with some modification and ideas to include Adsense ads to blend in with the theme.