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New Online Invasive Plant Database!

Search this database for information on species that are invasive or have the potential to be invasive in Oklahoma.  Learn about which species could be found in your region or habitats. 


This database is a resource for anyone in the state for education and management of invasive plant species. The Invasive Plant Database is not a static list, but we will be continually updating as new information becomes available.


Do You Know Your Thistles?

Can you tell an invasive thistle from our native species?  Thistle id can be tricky!  Our native thistles are important resources for pollinators and songbirds.  You don't want to waste time and resources removing natives! 

Our new informational poster helps you to learn the key features to identifying invasive thistles and their native look-alikes. 

Did you know... Three species of thistle have been designated by the Oklahoma legislature as Noxious Weeds? The musk thistle (Carduus nutans), Scotch thistle (Onopordum acanthium), and Canada thistle (Cirsium arvense) are listed by law as noxious and are considered a public nuisance across this state.

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Save the Date!

We will be hosting a one day invasive species conference on

Friday, December 1, 2023
at the ODWC Lake Arcadia Education Center, Edmond

Do you know of a project that could be highlighted?  Do you have a speaker suggestion?  Are you doing research that you would like to share?
Email the meeting committee!

Recieve updates on the meeting and other events by subscribing to our eNewsletter!

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The invasive Callery Pear

The problem!​​

The callery pear (Pryus calleryana) is a medium- sized tree that has commonly been used as an ornamental due to its’ showy white flowers in early spring and beautiful fall foliage. This rapidly growing tree provides shade around homes and commercial property and birds consume the fruit. There are both thorned and thornless cultivars. The Bradford pear or Chanticleer pear are common cultivars that show resistance to disease and pests and tolerate a range of environmental conditions.

Become an Official Member!

Join the battle against invasive species in our state!  

Membership funds contribute to:

  • small grants fund

  • development and printing of outreach materials

  • student scholarships to related conferences​

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