http://www.organicgardening.com/feature/1,7518,s1-5-18-137,00.htmlBlue hollies or Meserve hybrids (Ilex X Meserveae) have glossy, blue-green foliage like the English type and they form nice hedges. They are particularly cold-tolerant evergreens.
also (better):
http://www.hort.uconn.edu/plants/i/ilemes/ilemes3.htmlThe following are I. cornuta x I. rugosa hybrids:
'Mesdob' (China Boy®) - Reportedly cold hardy to -20 degrees F., this male selection is useful as a pollinator for 'Mesog' (China Girl®). The foliage is glossy green and the plants grow to about 10' tall with similar spread. The habit is rounded and dense in the landscape. The "China Series" appears to be both more heat and cold tolerant than the I. rugosa x I. aquifolium hybrids (Blue Hollies).
'Mesog' (China Girl®) - This is a female clone that is pollinated by 'Mesdob' (China Boy®) and features abundant 1/3" red fruit on a 10' tall and wide shrub. It has been embraced as an excellent landscape plant and displays better heat tolerance than the Blue hybrids. The leaf margins of this selection and its male counterpart turn under, leading to a "cupping" effect that separates these plants visually from the Blue hybrids.
Other Meserve Hybrids:
'Meschick' (Dragon Lady®) - This hybrid of I. pernyi x I. aquifolium is useful as a screen or hedge because of its strong pyramidal-columnar habit to 20' tall with a 6' spread. The leaves are spiny and dark green, while red fruit are produced using 'Mesan' (Blue Stallion®) as a pollinator.
I know we do not get the winters here in southern Pennsylvania that you folks do, but I have a thriving English Holly, and have just planted four Dragon Lady hollies that I hope to develop into a hedge.