Nation Alien-like blobs invading your yard? What to know about Nostoc commune and how to prevent it April 15, 2023 Victoria Moorwood, Cincinnati Enquirer Comments Off on Alien-like blobs invading your yard? What to know about Nostoc commune and how to prevent it Nostoc commune, an ancient bacteria also called star jelly, thrives in moisture. Here's how to identify it and what to know.