Welcome to Gallformers
The place to identify and learn about galls on plants in the US and Canada.
Try and get an Identity for a gall by providing known information.
Explore Galls (including Undescribed species) and Host Plants.
Here is a random gall from our database. This one is called Cynips heldae (agamic) and the photo was taken by Roxanne Moger © All Rights Reserved
Help Us Out
If you find gallformers.org useful and you are interested in helping us out there are a few ways you can do so:Resources
- Our guide to gall identification.
- Detailed descriptions for our key filters.
- Glossary for plant and insect terms.
- To ID galls and other plant symptoms in Europe, visit bladmineerders.nl
Interesting Reading
- If you are new to galls Charley Eiseman and Noah Charney's Tracks & Signs of Insects & Other Invertebrates: A Guide to North American Species is a good place to start learning. It covers a lot more than just galls and is an excellent resource.
- A long-anticipated update to Russo's guide to galls of the Western US was recently released by Princeton University Press.
- Some advice on finding galls.