My nearest min/max thermometer to my Alstroemeria plants is a Taylor min/max approximately 20 feet away out in the open about 5.5 feet off the ground. It reads 32F in an ice water bath. It recorded 27F last night. I failed to mention before that the Alstroemeria plants in question are under a Liquidambar styraciflua tree near the edge of its canopy with about 90% of the tree's leaves still intact, with the lowest branches about six feet off the ground. As of 1:30 pm today, the Alstroemeria plants are in full sun and have yet to show any damage. Saturday night was the coldest night here so far this winter at 25F but I couldn't help but cover the plants that night. I apologize for referring to them simply as "Alstroemeria plants" but most were rescued last year from Roy Sachs' old property and their parentage is currently in question. Some were growing in his greenhouse and I don't know for certain if they were there for protection or for winter flower production, although probably the latter. By the way, if anyone has any information regarding location/species/cultivars of any of Roy Sachs' plants on his old property, regardless of how vague the info might seem to you, please contact me privately. Nathan At 12:49 PM 1/16/2013, you wrote: >It would be interesting to know what type of thermometers are being >used to record the temperatures. It has to be a professional >max/min thermometer located at the location of the plants. I have >been recording temps for the weather service for years and I know >how important it is to record temperatures for accurate >reports. When I hear reports of damage above 32 degrees I am very >suspect of where this thermometer is located. Any entries on this >should actually included thermometer locations and their >accuracy. Joe, Oceanside, CA