Avalon lemons are also called "Avon lemons" which means, either way that you look them up, it's nearly impossible to find information that isn't about a skincare or makeup product. Nonetheless, the photos really show us a lot. Avalon lemons are knobby — again reminiscent of certain gourds in the fall. They seem to ripen from an earthy green to a bright yellow, the color moving from the pointed side connected to the tree's branch to the bottom half.