Native Plants
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Ask Mr. Smarty Plants
Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.
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Tuesday - February 13, 2007
From: Propsect Park, PA
Region: Mid-Atlantic
Topic: Managing Roadsides
Title: Roadside plants as absorbers of carbon dioxide
Answered by: Joe Marcus
QUESTION:
If plants absorb carbon dioxide why aren't they on a list of things to do to combat Global Warming? If we had more plants on the sides of our roads and highways would it help?ANSWER:
In the normal cycle of life, plants absorb and store carbon dioxide while growing and release it back into the atmosphere during the decaying process after death. Research has long shown that forests are important "sinks" for carbon dioxide; that is, they store large amounts of the gas due to their large size and long lives. More recent research has indicated that grasslands may also be important carbon dioxide sinks.Other than in some desert areas, most roadsides are well-populated with plants - primarily grasses - that certainly use and store significant amounts of CO2. The roads themselves and other developed areas are a separate issue, but in general, US roadsides are probably already absorbing about as much CO2 as they can. Large-scale foresting of our roadsides probably wouldn't be a practical solution for reasons ofpublic safety.
More Managing Roadsides Questions
Non-invasive alternatives to winter rye
August 20, 2004 - Re-vegetation requirements include winter rye, which is considered by some to be invasive to native wildflowers planted along the roadway. Is winter rye considered invasive to native wildflowers?
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Digging wild buttercup from roadside in Mechanicsville MD
May 28, 2012 - Mr. Smarty Plants, is it illegal to dig out wild buttercup in Maryland? I see them along the dirt road or just in the ditch. Since buttercup considered weed, I'm wondering what the law say about this...
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Starting program for growing wildflowers on highways in Dallas
March 04, 2003 - How can I start a planting program to grow wildflowers along the interstate and highways where I live?
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Mowing wildflower concerns from Lockhart TX
March 30, 2012 - I went to the Texas Highway Department (Texas Department of Transportation) web site and sent them a concern or complaint about them or independent contractors shredding the roadsides before the blueb...
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Pictures of Bastard Cabbage from Dallas TX
April 07, 2012 - HI! Re your March 12 posting:
The USDA Plants website pictures two very different looking plants identified as Rapistrum rugosum (bastardcabbage). Would you please post a photo with leaf and bloom ...
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