Poster has a purple background at the left and a yellow background at the right. Vertically up the left edge in semi-transparent white is "Space Invaders". At the top left are three paragraphs of white text about the San Francisco Bay. At the left center is a color photo of a shallow body of water with "help eliminate / non-native / invasive plants" over the top in orange. At the bottom left is a bulleted list of how to prevent invasions of unwelcome plant species. Down the right side are images of unwelcome plants with their names and descriptive text in black to the right of each image.