Plant Ontology Download

Beginning with Version #14 (January 2011), the Plant Ontology has been merged from two separate files (po_anatomy and po_temporal) into a single file called 'plant_ontology'. We recommend that all users switch to the single, merged file.

The below files are for version #21 from October 2015. For the current release please see

If you need current versions of the po_anatomy.obo and po_temporal.obo files, please contact us.


Accessing the Plant Ontology using GitHub repository (recommended for advanced users)

  • Anonymous access: The GitHub repository "plant-ontology" can be checked out with the following command:
    git clone There is no password for anonymous user.  Users can also browse the repository by pointing a web browser to
  • Developer access: If you are an ontology developer recognized by the Plant Ontology Consortium, please follow the instructions on developers guide to GitHub access.

Download individual association files from the SVN

  • association files can be selected, and downloaded from this list. Note: avoid using any association files in folders labeled "Test", as these are under development.

Database Dump Download

  • The latest MySQL dump files, as well as previous versions are available here.
    • If you would like to integrate dynamic, searchable Plant Ontology term data into your applications, please consider using our web services.