Rooftop gardens offer many environmental, personal benefits

Dear EarthTalk: I’m sure there are many good environmental reasons to build a rooftop garden. Can you enlighten? Also, I’d like to know how to go about creating one and whether or not some municipalities might offer incentives to do so.

Linda

via e-mail

Indeed there are many good reasons to build a rooftop garden, or a so-called “green roof†— whereby layers of soil and plants on top of homes and buildings provide a host of environmental “services†for the living space below as well as for the surrounding ecosystem. Unlike traditional roofs, green roofs thrive on (and filter) precipitation, decreasing the amount of pollution-laden stormwater run-off draining into our waterways. And thanks to the process of photosynthesis, the plantings create oxygen, cleanse the air and absorb carbon dioxide before it gets into the atmosphere and adds to our global warming woes.

Green roofs also provide insulation: All those layers of organic material help keep a structure warm in the winter and cool in the summer, and help cut energy use and costs. Migrating birds and other wildlife have been known to take a shine to green roofs, especially in urban areas where natural habitat options are limited. Likewise, homeowners and building residents tend to view their green roofs as oases of peace and tranquility within otherwise noisy and concrete-laden urban environments.

According to Green Roofs for Healthy Cities, a nonprofit industry association, green roofs are gaining popularity. North Americans added some 3.1 million square feet of them to their buildings in 2008 alone — up 35 percent from 2007. Part of the uptick can be attributed to increasing awareness of the benefits of green roofs among urban planners, building owners and managers, and homeowners, all who have pressured policymakers to ease the burden of zoning and permitting for such beneficial projects.

Chicago now sports some 535,000 square feet of green roofs — the most in North America. Other leading lights in the green roofs movement include Washington, D.C., New York City, Philadelphia, Baltimore, Montreal and Vancouver, British Columbia. Dozens of smaller cities have also embraced green roofs. Grand Rapids, Mich., sports some 75,000 square feet of them, and Princeton, N.J., and Newtown Square, Pa., each play host to 50,000 square feet citywide. Inquiring at city hall is the best way to see if your city or town offers incentives for creating a green roof or greening an existing one.

Relief for the costs of installing a green roof might be on the way from the federal government. As part of the Clean Energy Stimulus and Investment Assurance Act she wrote earlier this year, U.S. Sen. Maria Cantwell (D-WA) is calling for residential and commercial property owners who install green roofs or retrofit existing roofs to recoup 30 percent of their costs in the form of a federal tax credit.

Do-it-yourselfers will find a treasure trove of information on how to create and install a green roof at the Web site Greenroofs.com. The site’s keyword-searchable directory offers links to manufacturers of kits to make installing your own green roof that much simpler, as well as to professional installers across North America and groups working on urban greening issues.

CONTACTS: Green Roofs for Healthy Cities, greenroofs.org; Clean Energy Stimulus and Investment Assurance Act, govtrack.us/congress/bill.xpd?bill=s111-320; Greenroofs.com, greenroofs.com.

SEND YOUR ENVIRONMENTAL QUESTIONS TO: EarthTalk, PO Box 5098, Westport, CT 06881; earthtalk@emagazine.com. Read past columns at emagazine.com/earthtalk/archives.php. EarthTalk is now a book! Details and order information at emagazine.com/earthtalkbook.

Latest News

Richard Charles Paddock

TACONIC — Richard Charles Paddock, 78, passed away Friday, Jan. 2, 2026, at Charlotte Hungerford Hospital.

He was born in Hartford on April 12, 1947 to the late Elizabeth M. Paddock (Trust) and the late Charles D. Paddock. He grew up in East Hartford but maintained a strong connection to the Taconic part of Salisbury where his paternal grandfather, Charlie Paddock, worked for Herbert and Orleana Scoville. The whole family enjoyed summers and weekends on a plot of land in Taconic gifted to Charlie by the Scovilles for his many years of service as a chauffeur.

Keep ReadingShow less
In Appreciation: 
Richard Paddock

SALISBURY — Richard Paddock, a longtime Salisbury resident whose deep curiosity and generosity of spirit helped preserve and share the town’s history, died last week. He was 78.

Paddock was widely known as a gifted storyteller and local historian, equally comfortable leading bus tours, researching railroads or patiently helping others navigate new technology. His passion for learning — and for passing that knowledge along — made him a central figure in the Salisbury Association’s Historical Society and other preservation efforts throughout the Northwest Corner.

Keep ReadingShow less
Edward Ashton Nickerson

LAKEVILLE — Edward Ashton “Nick” Nickerson died on Jan. 1, 2026, in Sharon, Connecticut. The cause of death was congestive heart failure following a heart attack. He was 100.

Nick was born July 1, 1925, in Wilmington, Delaware, the son of a DuPont Company executive, Elgin Nickerson, and his wife, Margaret Pattison Nickerson. He spent most of his boyhood in Fairfield, Connecticut, and Newburgh, New York.

Keep ReadingShow less
Steven Michael Willette

SHARON — Steven Michael “Bird” Willette, 76, of Silver Lake Shores, passed away on Dec. 25, 2025, at Vassar Brother Medical Center, with his family at his side.

Steve was born in New York City to Dorman Willette and Ann (Sabol) Willette.

Keep ReadingShow less