September 3rd to 11th is Gall Week

If you have any interest in plant galls, this would be a great time to get out and look for some! There’s so much completely undocumented gall diversity, and many undiscovered species. You can participate no matter where in the world you are, though it would be particularly exciting to get some people from less actively-iNatted regions involved.

Here is this year’s project, which you can join and will be able to (manually) add observations to:

This is last year’s project, for comparison:

If you’re curious to see what species you might be able to find, check out this project - if you click “search” and filter by your location, you’ll get all the observations from your area.

And of course, is a fantastic resource for gall identification.


I invite people to add their rabbitbrush gall observations to

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