It is with great sadness that I have to announce the passing of my large Agave americana 'protoamericana'. (2 feet tall, in garden) For the winter, as I have other winters, I covered it with a plastic tent/dome. When I checked it last week, a couple of bottom leaves were slightly soft but otherwise she was doing very well. As the forecast was for sunny skies and no rain, I decided to take the cover off and give it some air and leave it off until the rains return. Stupid, stupid, stupid me should have realized that the nights were depositing a very heavy frost layer and the fog has kept everything very wet. My poor agave was used to being under cover. This combined with the freezing nights...she didn't stand a chance. Very sad. Lesson learned. The only thing that makes me feel better is that I have 8 seedlings on the go of this variety and they are fast growers. This agave grew 6 inches a year, which is very fast compared to my other agave varieties. Here's a few shots of my nursery. Notice the tiny teeth already starting to form.