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You are here: NPIC Home Page —> PestiByte Podcasts —> When to Plant After Using Weed Killer?

PestiBytes Episode 9: When to Plant After Using Weed Killer?

Introduction/Conclusion: Dr. Dave Stone, Director of the National Pesticide Information Center
Host: Sandra Uesugi, EHSC Outreach Program Coordinator
Guest: Dixie, NPIC Pesticide Specialist

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[THEME MUSIC]

DR. STONE: Welcome to PestiBytes, a podcast series from the National Pesticide Information Center. These are based on common pesticide questions from people just like you.

[THEME MUSIC]

SANDRA: This is Sandra, and I'm here again with Dixie to talk about Roundup. Can someone use Roundup to clear the weeds from an area before planting vegetables?

DIXIE: There are many different Roundup products available. Some are suitable to use for this purpose, and some are not. Always read the product label carefully to be sure the product has been approved for this use.

SANDRA: Will the Roundup harm desirable plants nearby?

DIXIE: Roundup products contain at least one active ingredient called glyphosate. Following proper application, glyphosate tends to stay put in the soil, so it is unlikely to harm untreated plants nearby.

SANDRA: Will the glyphosate damage or prevent growth in vegetables planted in the garden later on?

DIXIE: In the soil, glyphosate generally breaks down within days to weeks. This quick breakdown time, in addition to the way it sticks to the soil, makes glyphosate less available to plants grown in the treated soil at a later time. The product label will tell you how long to wait to plant your vegetables after using Roundup for weed control.

SANDRA: Thanks, Dixie!

DIXIE: You're welcome!

[THEME MUSIC]

DR. STONE: If you have questions about pesticides, please call us at 1-800-858-7378 or visit us on the web at http://npic.orst.edu. PestiBytes is brought to you by the National Pesticide Information Center, a cooperative agreement between Oregon State University and the Environmental Protection Agency. These are produced in collaboration with OSU's Environmental Health Sciences Center, funded by the National Institute of Environmental Health Sciences.

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If you have questions about this, or any pesticide-related topic, please call NPIC at 1-800-858-7378 (7:30am-3:30pm PST), or email at npic@ace.orst.edu.