Jardins Botaniques du Grand Nancy et de l'Université de Lorraine

Alpine plant?

A plant is called alpine when it lives at an alpine level, an area where the weather conditions no longer allow the forest to grow.  At this level, the average annual temperature is less than zero degrees Celsius, and the growth period less than a hundred days. 

Thick and/or waxy leaves, sap with a particular chemical composition and increased hairiness allow alpine plants to survive the hard conditions in which they live.