High mountains gardening

I am searching over the interenet to find plants that can survive windy winter (north winds) with temperature lover then -30 Celsius and over a meter of snow :))) at about 1100 meters over the sea level

Unfortunately, most of gardening sites are oriented to "optimal" condidtions: 500 to 700 over the sea level, warmer winters with no so much snow, etc.   Can you reccomend any site with plant information for high mountains??  I would like to know bloming period of some flowers, how to take kare of plants in that conditions, and other normal gardening stuff.

Thank you for any help :))