Quantifying The Quality

For greenhouse growers, the U.S. Green Building Council is a tough nut to crack, especially when it comes to its Leadership in Energy and Environmental Design (LEED) certification process.

LEED is a prestigious third-party certification program and a national benchmark that promotes a whole-building approach to sustainability in five key areas of human and environmental health, says Dr. Bodie Pennisi, Horticulture Department, University of Georgia. These five areas include: LEED development, water savings, energy efficiency, materials selection and indoor environmental quality.

This certification lacks any official agricultural connection to indoor plants and the role they play in improving human health by improving indoor air quality, Pennisi says. Green Plants For Green Buildings (GPGB) President Mike Lewis adds, “Ironically enough, you can have the greenest building on the planet and do not have a single living plant in it. Isn’t that weird?

“If you look at the ads and catalogs of all the vendors that supply LEED certified buildings with their cabinets, carpet, paint, the HVAC, those pages are filled with pictures of palm trees and blooming plants, because people identify plants with being green.”

Project Carbon is hoping to bridge that disconnect through the work of Drs. Bodie Pennisi and Marc van Iersel from the University of Georgia, which is funded by the National Foliage Foundation (NFF).

Cold, Hard Facts

Project Carbon, short for Quantification of Carbon Assimilation in Interiorscape Plants, aims to address this question: If an interiorscape of a certain size and plant species is implemented under typical light levels, how much carbon would be removed from the air over a given period?

Pennisi and van Iersel worked with 216 4-inch plants under three light levels. The plants used were Ficus benjamina, pothos, philodendron, sansevieria, aglaonema and spathiphyllum. After a ten-week period, these plants “fixed” a total of 700 grams of carbon under simulated conditions, Pennisi reports.
Also in their findings she adds, “Plants absorb carbon dioxide as a molecule. One might argue that what should be reported as a positive impact on the environment is the carbon dioxide removal and not just carbon removal.”

The results of Project Carbon are currently in the preliminary stage. Pennisi will be presenting her and van Iersel’s findings at the Tropical Plant Industry Exhibition (TPIE) this month, January 14-16.

Along with carbon dioxide removal, prior research has found indoor plants excel at removing a significant amount of volatile organic compounds (VOCs). In what Pennisi calls “phytoremediation,” plants in closed quarters can aid in depleting the air of octane, benzene, trichloroethylene and formaldehyde, to name a few. These VOCs emanate from such things as carpeting, occupants, newspapers, CD players and adhesives.

LEEDing Role
According to the United States Green Building Council (USGBC), Leadership in Energy and Environmental Design (LEED) is an internationally recognized green building certification system,  providing third-party verification that a building or community was designed and built using strategies aimed at improving performance across all the metrics that matter most: energy savings, water efficiency, carbon dioxide emissions reduction, improved indoor environmental quality and stewardship of resources and sensitivity to their impacts.  LEED provides building owners and operators a concise framework for identifying and implementing practical and measurable green building design, construction, operations and maintenance solutions.

Bill Lyden of Farm Life Tropical Foliage says, “The direction for any new construction is towards green, eco-friendly buildings. If we ever do get LEED points awarded for getting plants inside of these buildings, then I think there will be a huge demand for interior plant material. This would be quite an opportunity for growers to capitalize on and put in their marketing programs.”

The three key issues responsible for keeping indoor plants down and out of LEED’s current rating system are maintenance, transportation and a presumed expendability, Lyden says.

“Moving plants from South Florida where they’re grown to Minneapolis where a new building is can use too much fossil fuel. Also, in a recession like the one we’re in right now, it’s hard to justify keeping a plant program if people are getting laid off. Whereas, if plants are part of what makes a building green and part of the LEED criteria, the plants will stay.”

“We’re seeing some shift away from using plants in newly designed buildings because of cleaner, more stylized designs,” GPGB President Mike Lewis says. “We feel it’s important that at a table when a building is being designed or renovated that plants be represented. Lacking any real data regarding the carbon removal capabilities of live plants, it was difficult to make that case.”

Lewis goes on to say that a new, fresh scientific argument is needed in earnest to make a real impression on today’s architects, interior designers and building owners. “We’re not out of the game by any means and that’s why we’re pushing hard with Project Carbon,” Lewis says.

Before the Funding

Well before the NFF funding, the groundwork for research efforts like Project Carbon was laid by the U.S. Military and NASA research scientist Bill Wolverton back in the 1960s, Pennisi says.

Wolverton began to experiment with water hyacinths and other swamp plants. He tested their ability to clean up contaminates from water, specifically Agent Orange. He then moved his work to the BioHome at NASA’s Stennis Space Center to study indoor house plants as air purifiers.
Pennisi says Wolverton hypothesized that plants emit water vapor that creates a pumping action to pull contaminated air down around a plant’s roots. There, it’s converted into food for the plant.

She adds that other researchers have shown VOC removal through a plant’s stomatal uptake, absorption and adsorption to plant surfaces. “Plants do a lot more than people realize,” Lewis says. “Scientists know it, people know it, but no one has done any quantifiable measurement on exactly what they do. We need good, strong talking points–Project Carbon being one of them.”

Leave a Reply

More From Grow Initiative...
Seed Your Future feature

July 26, 2017

Seed Your Future Aims to Inspire Careers in Plants

Who will be the next generation of horticulturists? The answer lies in helping to change the perception of horticulture and using contemporary new language to tell our stories.

Read More
Albert Grimm, Jefferys Greenhouses

July 8, 2017

How You Can Use Lifestyle Marketing to Sell Plants

Should we be trying to educate consumers into loving what we like to produce, or should we allow consumers to educate us into producing what they love?

Read More
Metrolina Make a Wish Greenhouse

July 7, 2017

Metrolina Builds, Decorates Greenhouse for Young Cancer Patient

When Michael VanWingerden and his wife Courtney heard through their work with the Make-A-Wish foundation that 11-year-old Jason wanted a greenhouse to grow vegetables in, they knew Metrolina Greenhouses could help.

Read More
Latest Stories
Seed Your Future feature

July 26, 2017

Seed Your Future Aims to Inspire Careers in Plants

Who will be the next generation of horticulturists? The answer lies in helping to change the perception of horticulture and using contemporary new language to tell our stories.

Read More
Albert Grimm, Jefferys Greenhouses

July 8, 2017

How You Can Use Lifestyle Marketing to Sell Plants

Should we be trying to educate consumers into loving what we like to produce, or should we allow consumers to educate us into producing what they love?

Read More
Metrolina Make a Wish Greenhouse

July 7, 2017

Metrolina Builds, Decorates Greenhouse for Young Cancer…

When Michael VanWingerden and his wife Courtney heard through their work with the Make-A-Wish foundation that 11-year-old Jason wanted a greenhouse to grow vegetables in, they knew Metrolina Greenhouses could help.

Read More
Metrolina Greenhouses Dig and Swig Event

June 25, 2017

Consumers Revel in Gardening at Metrolina Greenhouses’ …

Metrolina wanted to promote plants, gardening, and creating a sense of community, so it decided to host Dig & Swig events at a local brewery.

Read More

May 23, 2017

6 Simple Ways to Acquire New Customers

Even the most successful brands need new customers if they want to grow their business, or stay profitable.

Read More
Tyler Beasley

May 21, 2017

Final California Spring Trials Thoughts From Allan Armi…

“I went home from California Spring Trials realizing that the students enrolled in our Greenhouse Management program at Spokane Community College need to experience the trials. Attending opened many doors of opportunity for me.”

Read More
Cannabis Adobe Stock feature

May 1, 2017

Why I Turned Down a High-Paying Offer to Grow Cannabis …

Young growers have passion for all aspects of organic and sustainable growing. The key to not losing them to the cannabis industry, according to Kelly Vance, a Technical Consultant for Beneficial Insectary, may be nurturing their interests in these fields by aligning greenhouse production with sustainable growing practices.

Read More
National Collegiate Landscape Competition Feature

April 27, 2017

Hoffman Nursery Cheers On the Next Generation of Hortic…

Hoffman Nursery was a sponsor of the recent 41st National Collegiate Landscape Competition, an event that offers several opportunities for companies in the green industry to meet and recruit the next-generation of horticulturists.

Read More
Kaylee South

April 22, 2017

American Floral Endowment Announces Winners of 2017 Pau…

Four students pursuing careers in horticulture now have scholarships to help them along the way, thanks to the American Floral Endowment.

Read More
Basil Planting feature

March 29, 2017

How You Can Embrace Greenhouse Food Production With Con…

Maintaining balance, learning continuously, and seeking support will help make your transition into producing greenhouse food crops a smooth one.

Read More
If your Wi-Fi is truly secure, your staff can help customers on the sales floor starting today

March 25, 2017

What Marketing Approach Can Attracts the Most Customers…

Inc.com surveyed more than a thousand customers to find out which marketing strategies worked best to entice them to try out a new business

Read More
Greenhouse Loyal Customer

March 16, 2017

How Brand Enthusiasts Can Be Your Most Loyal Customers

A marketing expert shares three core principles that direct-to-consumer companies can follow to create brand enthusiasts.

Read More

February 17, 2017

How to Keep Customers Coming Back With Top-Notch Servic…

A recent article on Forbes.com outlines seven ways organizations can take their customer service from good to great and beyond.

Read More

January 27, 2017

Why Greenhouse Growers Must Know Their Costs to Stay Co…

Tom Dudek, Senior Educator at Michigan State University Extension, says greenhouse growers should evaluate their production costs to determine if they need to make adjustments to stay competitive.

Read More
Workplace Trends

January 20, 2017

10 Trends Predicted to Impact the Workplace in 2017

Here are 10 workplace trends that Forbes contributor Dan Schawbel predicts for 2017 that may change the way you do business in the future

Read More

January 10, 2017

Sidney B. Meadows Scholarship Endowment Fund Accepting …

The deadline for applications is May 26, and 12 scholarships of $1,500 each will be awarded at the SEGreen Conference in August.

Read More
GROW Logo

December 28, 2016

Greenhouse Grower’s GROW Initiative: A Year In Review

Staying ahead of the competition in today’s world is about remaining in constant motion with innovation. To create a competitive advantage, you must consistently experiment with and learn from new ideas. Greenhouse Grower’s GROW initiative provided cutting-edge ideas and actionable advice.

Read More
Grow Summit 2016 group shot

December 20, 2016

Less Talk, More Action At Greenhouse Grower’s GRO…

Investing in technology, developing new marketing solutions, and recruiting young growers were just a few of the issues covered at GROW Summit 2016.

Read More