For the past 18 months I have been writing profiles of native plants for the mid-Atlantic region for the website Houzz. While much of the content on this site is focused on interior design, they are making a concerted effort to spreading the news about native plant species and how to use them in residential design. Also, many of the gardening and landscaping articles focus on responsible and sustainable design.
They have a number of writers from different parts of the U.S. doing profiles on useful plants native to their region. Writers for other regions of the US include: Ellen Sousa for the Northeast, Benjamin Vogt for the Central Plains, Heather Holm for the Great Lakes, and Noelle Johnson for the deserts/southwest.
Also on the website you can find articles on a number of specialty issues like drought tolerant plants, trees for wet soils, and native grasses to name a few. I encourage you to check out the resources on landscaping and native plants on Houzz.
Here are links to a few of my articles: