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PRE — Plant Risk Evaluator

PRE is a science-based online tool to evaluate ornamental plants and measure the level of risk for invasiveness in a region.  Visitors can browse the published evaluations, view the plant list, and read about our history and methodology.  If you are a plant specialist, please consider joining our growing PRE community.  Welcome!

Join the PRE Community

If you are a plant scientist, affiliated with a horticultural college or botanic garden, and would like to learn more about becoming a PRE Screener, please follow this link and fill out this "PRE Participation Form", which starts the process of creating a PRE Account.

 

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Latest News

Announcement: PRE has a public face now

Posted by:  PRE Administrator on 2025-06-06
The PRE Technical Advisory Team is pleased to announce that evaluations that are created by this tool can now be viewed and downloaded by the general public, providing a new level of transparency in this work. The tool is running on an updated version of the web framework, and there are some important changes made.

 

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