50 EDELWEISS Leontopodium Alpinum White Flower Seeds *Comb S/H BLOOM TIME: Spring - Summer HARDINESS ZONE: 3 - 7 PLANT HEIGHT: 6 - 12" . . . PLANT SPACING: 9 - 12" LIGHT REQUIREMENTS: Sun . . . SOIL / WATER: Average COLOR: White Flowers / Silvery - Grey Foliage. I wish I could think of this plant just once without also thinking of the song, but I just cant do it! Edelweiss is a native of the Swiss Alps and is the Swiss National Flower. These plants do tolerate the cold well and also tolerate moist conditions. They have starfish-like wooly blooms and is are an excellent choice for alpine & rock gardens. Edelweiss is a protected species in some areas.