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TechLine Invasive Plant News
PO Box 1385
Helena, MT 59624

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About Us

TechLine is a suite of print and online resources that provide invasive plant professionals access to new, innovative, and proven science-based information. The purpose of TechLine is to support invasive plant management programs by connecting researchers with federal, state, county, and private land managers so they may share the successes of their programs, techniques, and methods and learn from one another. Corteva Agriscience sponsors TechLine with the goal of providing an objective communication tool for on-the-ground natural resource managers who face common management challenges.

Celestine Duncan


Celestine serves as editor and primary author for TechLine news articles and management tips. Owner of Weed Management Services since 1988, Celestine earned her BS in Agronomy/ Horticulture from New Mexico State University and MS in Agronomy [Weed Science] from Montana State University. She conducted field research, environmental assessments, and training programs throughout the Northwest on invasive plants for more than 30 years. When she’s not writing articles about the latest in invasive plant management research for TechLine, she spends her time flying supercubs, canoeing, hiking and cross-country skiing out her back door in Helena, Montana. 

Nann Parrett
Copy Editor/Web Manager


Nann is a communications and publishing professional with a BS in journalism from the University of Oregon and a minor in environmental studies. She has over 15 years’ experience working in publishing—as an author, editor, designer, and web developer. She also has her MA in teaching and taught high school English/Literature and college writing for over 10 years. She runs a vintage letterpress shop, The Territorial Press, with her husband in Helena, Montana. Nann founded the nonprofit Cultivate Helena and is also a DJ on MTPR’s Night Train show. She enjoys hiking, XC-skiing, playing music and adventuring with her family when she’s not under a deadline crunch.

Darby Bramble


Darby coordinates subscriptions, customer care, and social media relations with our audience. With a degree in Environmental Studies from Western Washington University, Darby has conducted outreach and field-work for federal, state and non-profit agencies across the West. In addition to caring for TechLine subscribers, she can be found chasing her three young children around the mountains of southwest Montana.