The rhyme doesn’t work as well when you add a few digits, but the idea is the same. The Chronicle reports on attempts to stop an invasive plant in San Francisco Bay. The plant, a hybrid version of Atlantic cordgrass, has already taken over 1,500 acres of the Bay and threatens 69,000 more, including South Bay areas.

Invasive plants and animals are a constantly increasing threat to native species, and are generally considered to be the second-most important problem after habitat loss from development. This is a land management challenge that will be increasingly important in the future.

-Brian