The sign of a true arctic freeze is when I can walk on the pond - something that hasn't happened in three years. The fish are as happy as clams under that thick layer of ice.
In the front, here is the progression of ice forming on the fountain:
This fountain has become a useful gauge in helping to determine the severity of an arctic outbreak. By comparing how much ice forms on the fountain to previous years, I have a sort of quantifiable analytical insight into the severity of each outbreak that mere low temperatures fall short of providing. Having said that, I now realize it's not perfect. As you can see, more ice formed this time than Nov. 2010, yet Nov 2010 killed way more plants. At the very least, I find the mental imagery it provides useful.
Ok, on to the plants. The plants I mention here are, for the most part, in that questionable zone between hardy and not hardy. For the sake of simplicity, I'll rate how they fared on a scale of 1-7:
1 = Dead
2 = Severely damaged and may never fully recover
3 = Severely damaged but will probably fully recover eventually
4 = Severely damaged but will probably fully recover in less than a year
5 = Moderate cosmetic (e.g. leaf) damage but no known structural damage
6 = Minor leaf/flower damage
7 = No damage
I also note whether I took any protective measures for each plant and if so, what they were specifically.
|Unprotected Astelia chathamica 'Silver Spear' = 5 (Moderate cosmetic damage)|
|Unprotected Echium fastuosum = 1 (Dead)|
|Protected Jubaea chilensis = 7 (No damage, protected with Christmas lights and covered with a blanket)|
|Unprotected Camellia sasanqua 'Apple Blossom' = 6 (Flowers froze, foliage is ok)|
|Protected Hebe 'Turkish Delight' = 7 (No damage; covered with a blanket)|
|Unprotected Edgeworthia chrysantha = 7 (Flower buds still seem to be in-tact)|
|Unprotected Cornus capitata = 2 (This has mostly dead written all over it)|
|Unprotected Eucalyptus dalrympleana = 5|
|Unprotected Asplenium scolopendrium (left) = 6 & Aspidistra elatior (right) = 7|