Greenspade, a horticultural and tree blog, deserves a look. Although the author is not local, Atlanta tree enthusiasts will find the site interesting. The author, Chris Welch, puts a new twist on blog presentation by organizing article titles as horticultural definitions. If my explanation leaves you puzzled, then visit Greenspade and check out the format. The photography is very good. Graphic elements are pleasing.
Chris is an ISA Certified Arborist and urban horticulturalist.