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 is an internet news media organization:
the international greenroof industry’s resource and online information portal.

Our Goal is to inform, promote and inspire the earth friendly technology of organic greenroof architecture through the interchange of ideas, projects, news, video, travel, research, organization and government updates, marketing opportunities and exclusive features via our website. We recognize that each reader, project, and perspective is unique.

Our Mission is to facilitate information, and as “The Greenroof Industry Resource Portal,” serves an important role as the information database and clearinghouse for the greenroof movement worldwide. Founded in 1999, the website continues to evolve to better reflect the needs and desires of our ever growing readership while continuing to provide an interactive platform of greenroof learning and varied living architecture philosophies. We launched our news magazine-type format in May, 2003, and website-wide access is always free and unencumbered!  We love to push the limits and post articles from guest contributors and occasional guest columns along with commentary, book reviews, and exclusives from publisher Linda Velazquez.

Our Readership audience includes design and construction professionals, building stakeholders, decision makers, environmental consultants, government officials, students and homeowners interested in sustainable design and environmentally friendly architecture.

Join the greenroof and greenwall community by liking our Facebook page, following us on Twitter, linking with us on LinkedIn, share with us on Google+, subscribing to our GreenroofsTV channel on YouTube and our monthly eNewsletter via Constant Contact. is the Exclusive Publisher of the following:

The Greenroof Directory of Manufacturers, Suppliers, Professional Services, Organizations, Students & Green Resources.  Maximize your marketing strategy in the emerging international greenroof industry and reach our highly targeted greenroof market by listing your business with us!  Advertisers in The Greenroof Directory pay an annual fee for a Directory Listing which links to categorized listings, and their full page Color Brochure (Sponsor, Elite, and Premium Listings only).

The Greenroof & Greenwall Projects Database.  Our goal is to compile a comprehensive body of global greenroof & greenwall projects searchable by type, date of completion, geographic location, designer, manufacturer, etc., all at no charge.  And, our goal is to be inclusive, not exclusive.  While an ambitious and time-consuming undertaking to be sure, with all the stake-holders' input we can make this a success.

Submit Your Greenroof & Greenwall Projects by using the easy online form in English, Spanish, or German.

As we all participate, everyone benefits from this potentially huge and important reference database of greenroof Projects worldwide.

Greenroofs & Walls of the World™ Virtual Summit. is the organizer and promoter of this virtual event. The Mission of the Virtual Summit is to inform, share, and create a global social media experience for learning and networking via the power of the Internet. In addition to raising awareness of our market and industry, the Virtual Summit is an interactive platform for the interchange of ideas through a combination of keynote speakers, expert panels, moderated chat sessions with live Q & A, on-demand presentations, plus live video chatting at the Sponsor Meeting Rooms, Networking Lounge, and the spectacular 24-hour Expo Pavilions showcasing vendors and organizations from across the world. is a video channel devoted to greenroofs and greenwalls from and across the globe. and are encouraging a loose network of Greenroof "Videographers" to submit their videos to us to be included on the greenroofsTV channel on YouTube.  Showcase your own experience and increase your exposure by sharing your interviews, tours, project visits, etc., here, and send us feedback!  If you are interested in sending us video, we ask that you sign-up for an account in YouTube - it is very easy and free.  After that all you have to do is upload your videos and send us an email when you are done.

Stay up to date with our industry by watching our short and fun "This Week in Review" video on produced and hosted by Anjuli Velazquez. You can also watch our original WebTV series Sky Gardens - Greenroofs of the World™ hosted by Linda Velazquez here.

Sky Gardens Blog

Sky Gardens Blog ~ where cool green meets lofty blue. founder and publisher/editor Linda Velazquez enters the blogosphere and kicks off Sky Gardens ~ a blog about greenroofs, the living roofs community, and awesome sustainable design in general from her, our contributing editors, and guest bloggers.

Visit Sky Gardens for a look into our personal takes on the greenroof world.

The Greenroofs and Walls of the World™ - 12 Month Wall Calendar.  Our Greenroofs and Walls of the World™ Calendar combines two of our most popular destinations on The Greenroof Projects Database and Upcoming Events.  It’s a great way to highlight fabulous projects and our website Sponsors, our highest level of advertising.

Printed on 50% recycled paper with 25% post consumer waste using soy inks. offers the following Exclusive Features:

The Greenroof & Greenwall Projects Database
Peruse the multi-searchable fields of the international Greenroof & Greenwall Projects Database.  Submit your greenroofs and walls as case studies and become a part of our international reference. 

Guest Feature Articles
Read the submissions of personal stories, opinions, and viewpoints on a range of subjects pertaining to the greenroof industry (no "advertorials").

Contributing Editor Columns
Read these lively occasional columns from experts in their fields:  Ask Ed,
Green Roofs on the Curve and Christine's Ramblings, The Green Roof Guy, Sustainable Roofing Technologies, A View from the Sky Trenches, Chic Sustainability, The G.R.E.E.N. Report, Green Walls, and The Green Roof Energy Series.  Send us your questions, and read about these wonderful people below.

Top 10 List of Hot Trends in Greenroof & Greenwall Design
Greenroofs are fast becoming green staples of chic sustainability in mainstream architecture and high performance building with a hip environmental sheen that is attractive to young and old.  And we all know that greenroofs are vibrant and exciting alternatives to the average unused, hot, and often downright ugly black tar or concrete roofs that we see covering the world, but what and where are the new and exciting projects on the boards?  How about the newest darling, greenwalls?

Enter the Top 10 List of Hot Trends in Greenroof & Greenwall Design to showcase the important, newsworthy and stimulating projects from around the world!  Our Design Editor Haven Kiers and Publisher/Editor Linda Velazquez inaugurated the series in 2007 and continue this fun yearly endeavor.

Sky Gardens  ~ Travels in Landscape Architecture is the basis of the Sky Gardens Blog – Publisher Linda S. Velazquez’s former column with a view of her unique perspective of the world, highlighting a different U.S. or international city active with greenroof projects and people.

NewsLinks is a huge database of a variety of greenroof articles, with Archives from 1996 - Present.  This section offers a glimpse into what and how other online and print publications are talking about living roofs and walls - from internet magazines to blogs to radio shows to organization press releases. News is posted as it comes across the newswire, listed by most recent date.

Upcoming Events
Upcoming Events is a huge database of
a variety of seminars, workshops, conferences and other public events that address green building, green living, and the greenroof concept, presented with contact information for the respective organization, as well as highlights of relevant Past Events, where we have Archives of Upcoming Events from 2001 - Present.

Stay up to date with these sections for specific industry related updates:

Industry News
Get your news from companies, organizations, governments and universities.

Industry Support
Learn what governments are offering incentives, grants, policies and programs designed to promote green architecture and the public.

Research Links
Research Links informs you of current greenroof sources and studies being conducted by universities, private companies, and public or governmental affiliates.

Search for or post your job and internship openings/wanted here for free!

The Student Directory, Student
Feature Articles, Projects & more
A place where students involved with greenroof pursuits can post projects and papers, and make contacts with other students and companies.  Send Christine Thuring, our Student Editor, your comments and suggestions.

Greenroofs 101
Greenroofs 101 is a sub-web of its own and our most popular section.  It is lengthy, holding the nuts and bolts information about the earth friendly technology of organic greenroof architecture.

This is Linda's original website and independent study paper designed to be a living research document. We update this section often as new findings and ideas emerge.  Read all about greenroofs here, including: FAQ's; Concept; Advantages; Components; How To's; Bibliography; Plant Lists; Applications; and Issues.

The Greenroof Directory
Search through six Category Sections to locate greenroof professionals & materials in your area or around the globe, searchable by multiple fields.  Maximize your marketing strategy in the emerging international Greenroof & Greenwall Industry and list your business with us.

The MarketPlace
Do you have a product or accessory related to extensive or intensive greenroofs, roof gardens, sod or earth-sheltered homes? Then you can advertise it in the greenroof depot. You can search the You can search the greenroof bookstore for books, magazines, design guides, conference materials, and calendars dealing with greenroofs and issues of ecological and sustainable design.

Regarding advertising practices - in an attempt to stay consistent with our environmentally friendly mission and goals, we will make every effort to screen our advertisers carefully.  But we also believe in an open market and our readers' right to make an informed decision and choose their own professionals and product suppliers.

About The Principals:

Linda S. Velazquez, ASLA, LEED AP, GRP, is publisher and editor of (1999) and is the author of its original content, and is also the designer of The Greenroof & Greenwall Projects Database.  She has a Bachelor’s of Landscape Architecture degree from the University of Georgia (2000, cum laude) and an Associate of Arts in Business Administration (1982). She heads up the Sky Gardens Blog ~ where cool green meets lofty blue.  “Cool green?”  Cool green architecture, cool green people, cool green environments, etc., you get the picture. “Lofty blue?”  As in sky high spaces, places, ideals, and ideas.

Linda is a greenroof design consultant and principal of Sky Gardens Design, and has presented on greenroofs all over the world.  Linda is also a mom of three and was an international flight attendant for 33 years, having retired from Delta Air Lines in September, 2012.  When not too busy writing, editing, and visiting projects around the globe, she produces and hosts the Sky Gardens - Greenroofs of the World™ WebTV series which features one spectacular greenroof and then examines project and city stakeholders involved in the design process.  She lives in Alpharetta, Georgia with husband and partner Aramis, and the occasional "children" who keep coming back every now and then.

View Linda's Profile

Aramis M. Velazquez is the CEO (Chief Everything Officer) of, LLC (1999).  Aramis has an MBA from Keller Graduate School of Management and a B.S. in Industrial Engineering from Florida International University, with a strong Engineering, Information Technology & Accounting background.

Aramis handles all the operations in, LLC, which includes Sales & Marketing, Social Media, Web Development, Information Technology, Accounting, Billing, Customer Service and whatever else Linda does not want to do.

View Aramis' Profile
Ari Velazquez is the developer of The Greenroof Directory, the developer and administrator of The Greenroof Projects Database.

Ari graduated from the Georgia Institute of Technology (Georgia Tech) with a degree in Computational Media (video game design) in 2010.  He's the youngest of Linda & Aramis' three kids. 

View Ari's Profile
Anjuli Velazquez is the Associate Producer of our page, the greenroofsTV channel on YouTube as well as the Sky Gardens ~ Greenroofs of the World™ WebTV series.  She also writes, films and produces our weekly "This Week in Review" video on

Anjuli graduated in 2010 with a degree in Bachelor of Arts in Interdisciplinary Studies with a Minor in Women's Studies from the University of Central Florida.  She produces AnjuliTV and wants to pursue her career in television and film production.  Anjuli is Linda and Aramis' middle child.

View Anjuli's Profile

About our Collaborator:

Caroline Menetre was our student intern from 2008 - 2009 and  continues to collaborate with us.  Caroline graduated in 2009 with a degree in Environmental Horticulture at North Metro Tech in Atlanta with a specialization in Sustainable Urban Horticulture.  Previously, she was employed for 20 years as art director with one of Northwest Florida's most established and successful advertising agencies.

Keenly interested in greenroofs and greenwalls – and combined with years of experience in advertising and editorial publications – Caroline has helped grow
The Greenroof & Greenwall Projects Database; headed up the new design of our 2011 Greenroofs & Walls of the World™ - 12 Month Wall Calendar; and also helped design the look of our blog, Sky Gardens ~ where cool green meets lofty blue, among other projects. She is currently an independent landscape designer, environmental horticulturist, and local organic garden manager.

View Caroline's Profile

We are proud members of the following associations:

American Society of Landscape Architects
Georgia Chapter Member (GASLA)

Green Roofs
for Healthy Cities

Corporate Member

U.S. Green Building Council
Atlanta Chapter

Industry Collaborator

Southface Energy Institute

Follow us on Twitter!Like Us on Facebook!Join our Greenroofs Network Group in LinkedIn!Read our Sky Gardens Blog!Subscribe to our eNewsletter!Subscribe to our Greenroofs.TV channel in YouTube!

These are our Guest Contributing Editors, in order of coming on board, who graciously provide unique insights in their field of expertise without compensation (affiliations are given for identification purposes only):

Ed SnodgrassEd Snodgrass is our Plant Editor (2004).  He writes an occasional Q & A column entitled "Ask Ed" where he answers your plant and horticulture questions, and also contributes an occasional Plant Feature, which highlights a particularly interesting and useful greenroof plant.

Ed is a Horticultural Consultant and co-owns and operates Emory Knoll Farms, a perennial nursery specializing in green roof plants, currently stocking over 100 varieties and providing over 2.5 million sf of planted roofs.  In 2010 Ed co-authored his latest book The Green Roof Manual: A Professional Guide to Design, Installation, and Maintenance with Linda McIntyre, published by Timber Press.  In 2006, Ed, along with Lucie Snodgrass, co-authored Green Roof Plants, A Planting and Resource Guide, published by Timber PressLocated in Street, Maryland, Ed lives as lightly on the Earth as he can.

View Ed's Profile

Glam Christine ThuringChristine Thuring is our Student Editor (2004) and, in addition to her biannual newsletter "Green roofs on the curve" and "Christine's Ramblings," she also writes occasional Exclusive Features and Blog posts.  With a background in plant ecology, Christine Thuring has been focused on green roofs since 2001.  She has a MSc from the Penn State "Centre for Green Roof Research" (2005) and is currently a PhD candidate at the University of Sheffield.  As a Contributing Editor for, she responds to queries and enjoys connecting people and interests.  Sign up here to receive her occasional Ramblings and Newsletter.

In addition to research, Christine has represented green roofs in terms of education and communication, ecological design and consulting, and German-to-English translations (learn more).  She is best defined by Chlorophyllocity, through which her many interests and activities are represented.  From collaborative design projects to applied research, translation, and study tours (Green Roof Safari), her mission is to facilitate and support humanity's transition from the carbon to the ecological age.  A multi-lingual citizen of the world, Christine enjoys rail travel, loves bogs and spring wildflowers, and rides her bike everywhere.

email: or
View Christine's Profile

Kelly Luckett, LEED AP, GRP, is "The Green Roof Guy." He fine-tuned his editorial focus and inaugurated his new column of the same name in April, 2008.  Formerly "The Roving Exhibitor" (2005), he wrote about his experiences at green building conferences as President of Green Roof Blocks.  As president he still is a frequent trade show exhibitor at greenroof and green building conferences - but Kelly also roves around the country attending ASTM, GRHC and other roofing and greenroof related organization meetings, and has become a central figure here.  In fact, in November, 2010, Kelly was selected to receive the Green Roofs for Healthy Cities Civic Award of Excellence in recognition of his contribution to the green roof industry.

In 2009, Kelly authored Green Roof Construction and Maintenance, published by McGraw-Hill's Greensource.  Look for The Green Roof Guy's column about his experiences and impressions within the greenroof industry as just a regular (green) roofing guy from St. Louis, Missouri, where Kelly lives with his wife, son and daughter.  So read his column to stay up to date within the greenroof industry!

View Kelly's Profile

Ralph Velasquez is a "Sustainability Champion" and our former Sustainable Roofing Technologies Editor.   Although his new corporate responsibilities don't allow him the time for a regular column any more, Ralph is still with us as our first Guest Contributing Editor, now writing his occasional column "Perspectives from the Green Boardroom."

In April 2008 he inaugurated his updated column "Sustainable Roofing," changing his previous editorial focus when you knew him as the ASTM Editor (2005).  He then wrote a quarterly "ASTM Update" as a member of the American Society for the Testing of Materials Green Roof Task Force (E.06.71.07), part of the sub-committee for Sustainability (E.06.71), which in turn is part of the committee for Performance of Buildings (E.06).

Ralph is the former Executive Director of Sustainability with Tremco Inc.  Ralph lives in Nashville, Tennessee with his wife.

View Ralph's Profile

Patrick CareyPatrick Carey, GRP, is our Architecture Editor (2005).  He writes an occasional architectural column entitled "A View from the Sky Trenches," where he selects and discusses pertinent greenroof industry topics.

Patrick has a degree in architecture and lives in Seattle, Washington, principal of hadj design, a green roof design-build company.  Patrick is also director of the Northwest EcoBuilding Guild's Green Roof Project.  PKC is also a trainer for the Green Roofs for Healthy Cities Green Roof 101,  201, 301, & 401 Courses.

View Patrick's Profile

Haven Kiers, MLA, LEED AP, GRP, is our Design Editor (2005).  She writes an occasional column entitled "Chic Sustainability," and co-writes and co-presents the "Top 10 List of Hot Trends in Greenroof & Greenwall Design" series with Linda.  She feels the "Greenroof challenge lies in finding the right balance between idealistic principles and cutting edge design."

Haven is a Mom and lives and works in Davis, California, with her husband, daughter, and son.  Haven designs and presents nationally about greenroofs, and is also a trainer for the Green Roofs for Healthy Cities Green Roof 101, 201, & 401 Courses.

View Haven's Profile

Dr. Bill RetzlaffDr. Bill Retzlaff is the G.R.E.E.N. Editor (2006).  He writes a bi-annual column entitled "The G.R.E.E.N. Research Report."  Dr. Retzlaff is the research coordinator of the St. Louis metropolitan area research collaboration G.R.E.E.N. - Green Roof Environmental Evaluation Network - between Southern Illinois University Edwardsville (SIUe), Green Roof Blocks, Jost Greenhouses, Midwest Trading and Horticultural Supplies, Inc., Midwest Groundcovers, JDR Enterprises, Emory Knoll Farms, Garick, The Gaia Institute, and

Bill Retzlaff, Ph.D. is an Associate Professor and Chair, Department of Biological Sciences, Environmental Sciences Program at SIUe, and lives in the St. Louis, Missouri area with his wife.


George Irwin is our Green Wall Editor (2008) and writes "The Green Walls Column." George is President and CEO of Green Living Technologies, LLC, a company that manufactures and designs Green Living™ Walls & Green Living™ Roofs in addition to other Green Living™ Accessories.  He is a former trainer for the GRHC Green Walls 101 & oversees additional green wall research with various higher educational facilities in the U.S.

George lives in Rochester, New York with his wife, son and daughter.  In his spare time he is still an avid gardener he also enjoys travel and lecturing.

View George's Profile

Christopher Wark is our Energy Editor (2010) and completed his seven-part series entitled "Cooler Than Cool Roofs: How Heat Doesn't Move Through a Green Roof" in April 2011.

Christopher Wark has 23 years of multidisciplinary engineering experience providing mechanical, energy analysis, and electronics support and services to manufacturers, universities and national labs.  In 2002, Chris established SHADE Consulting/Green Roof Innovations with his wife Wendy.  With SHADE, he developed a roof system heat transfer computer program and conducted green roof energy analyses for several major cities and organizations.

Chris is currently an Associate with WSP Flack + Kurtz where he manages their building analysis group, conducting whole-building energy analysis and air flow modeling.  Chris holds Bachelor’s and Master’s of Science degrees in Mechanical Engineering from Washington State University.  He lives in Manhattan, New York with his wife.

View Chris' Profile

John Shepley is our Green Business Editor (2011) and contributes Sustainable Business Insights.  John has worked as an engineer, technical manager, business manager, and management consultant.  Since 1984, he has lived & worked in Baltimore and surrounding areas, with a couple of years in Copenhagen Denmark building a new metro system there.  In 2004, John co-founded Emory Knoll Farms, Inc. in Harford County.  Emory Knoll Farms grows plants exclusively for green roofs.  In addition to serving the green building industry they operate a socially just and sustainable business. 

John is a founding board member of the Baltimore Biodiesel Cooperative (2004-2009), and has served on the board of the Chesapeake Sustainable Business Alliance since 2006, where he has been chairman since 2009.  John is passionate about renewable energy, sustainable living and business, and promoting a living local economy.  He drives a vegetable-powered truck, and has an electric Mazda RX-7.  

John has a Bachelor’s Degree in Electrical Engineering from West Virginia University, 1984.  He lives in Glen Arm, Maryland with his wife, stepson, and two dogs.

View John's Profile

Kevin Songer, J.D., ISA Certified Arborist & Municipal Specialist, LEED AP BD+C, is our Tropical Green Roof Editor (March, 2012).

Kevin serves as green roof expert for MetroVerde, a Florida based vertical green design company.  He was awarded the 2011 ‘Green Hero’ of the year award and the 2009 Innovation in Landscape and Water Conservation recognition by the Northeast Florida Chapter of the USGBC.  Kevin has spoken of the economic and ecological benefits associated with green roofs at numerous functions and seminars. He served on's “Wind, Water, Heat, Grow. Greenroofs,” panel during the 2011 Greenroofs & Walls of the World™ Virtual Summit.

Kevin writes a daily green roof blog, Living Green Roofs, and contributes green roof notes to the Native Plant and Wildlife Garden web project.  Kevin also holds an undergraduate degree in biology and the Juris Doctor degree from Florida Coastal School of Law with a focus in environmental law.  Kevin lives in Jacksonville, FL with his wife Judy.

View Kevin's Profile

Jörg Breuning

Jörg Breuning, was born in the green roof capital of world.  He began working with green roofs in Stuttgart, Germany in 1980.  Since then, he has installed and maintained tens of millions of square feet of green roofs throughout the world.  Jörg is The Green Roof Patroller (February, 2013).

In 2003 Jörg transferred his German Company (founded in 1985) to the United States after being the key consultant for Chicago’s City Hall green roof.  His company, Green Roof Service LLC (Green Roof Technology), has introduced numerous innovations to the North American green roof industry.   Jörg’s articles will strongly focus on topics that ensure common sense is always practiced, ensuring that the horse stays in front of the cart, and provide valuable insights into making green roofs as popular and efficient as they are in Europe.

View Jörg's Profile

The opinions expressed by our contributing editors may not necessarily reflect the beliefs of, and are offered to our readers to simply present individual views and experiences and open a dialogue of further discussion, debate and research.  Enjoy, and if you have a particular comment, please contact the author or send us an email to:


Publisher Acknowledgements – quoted from Linda S. Velazquez in 1999 while a fifth year undergraduate student at the University of Georgia – but still relevant today:

“Landscape Architecture Magazine’s May 1998 article by J. William Thompson spurred me on to conduct the original UGA research paper that eventually turned into this website.  I had seen greenroofs throughout Europe, but not in the U.S., and wondered why we, as landscape architects, weren’t yet interested in this fascinating, ecologically sound, design possibility. I took Mr. Thompson’s advice to “seek out the most up-to-date information available and to become a leader of greenroof technology.”  Research through an independent study program made sense to me as most professors had only a vague idea of what greenroofs were all about.

Charlie Miller, P.E. of Roofscapes, Inc. has been very helpful in providing me with so much of his greenroof stormwater research and information.

Tom Liptan, ASLA, has shared his thoughts and personal experiences with me and provided me with many of my initial leads.

Katrin Scholz-Barth, environmental and civil engineer, has been very open to assisting me with engineering tips and plant selection for my Senior Project.

Dr. Michael Krebs, Sales Manager and Walter Hussong, Civil Engineer at Optima in Tornesch, Germany, were very hospitable during my visit to their headquarters in March 1999.  They provided me with invaluable insight from the tour of the offices.

Kevin Burke, AIA, of McDonough + Partners has assisted me greatly by providing me with background information regarding their Gap Headquarters project as well as manufacturer product information and comparison studies.

Dr. Jeffrey C. Luvall of NASA’s Global Climate and Hydrology Center at the Marshall Space Flight Center in Huntsville, Alabama sent me a ton of fascinating information on the urban heat island situation.

A special thanks goes to a professor of landscape architecture at the University of Georgia, Kwesi DeGraft-Hanson, for encouraging my interest in greenroofs.” - LSV

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