Commercially available

• Frau Karl Druschki
• Reine des Neiges
• Schneekönigin (hybrid perpetual, Lambert 1901)
• Snedronningen
• Snow Queen (hybrid perpetual, Lambert, 1901)

102 favorite votes.  
Average rating: GOOD+.  

White, near white or white blend Hybrid Perpetual.
Registration name: Frau Karl Druschki (Hybrid Perpetual, Lambert, 1895/1901)
Exhibition name: Frau Karl Druschki (Hybrid Perpetual, Lambert, 1895/1901)

Bred by Peter Lambert (Germany, 1895).
Introduced in Germany by Peter Lambert in 1901 as 'Frau Karl Druschki'.
Introduced in Australia by George Brunning - St. Kilda Nurseries in 1903 as 'Frau Karl Druschki'.

Hybrid Perpetual.  

White.  None / no fragrance.  36 petals.  Average diameter 5.5".  Large, full (26-40 petals), borne mostly solitary, in small clusters, cupped, high-centered bloom form.  Occasional repeat later in the season.  Long, pointed buds.  

Armed with thorns / prickles, climbing, well-branched.  Dark green foliage.  

Height: up to 6'7" (up to 200cm).  Width: 4' (120cm).

USDA zone 4b and warmer.  Very hardy.  a good subject for pegging.  Blooms tend to ball in wet weather.  prefers dry climates.  Disease susceptibility: susceptible to Mildew.  Prune lightly or not at all.  

Tetraploid

Schneekönigin is the German word for Snow Queen. 'Frau Karl Druschki' is the best known white Hybrid Perpetual, but it is completely lacking in scent. Some authorities consider it to be a Hybrid Tea.
[From Der Rose Zucht und Pflege by Olbrich, 1903, p. 253:]
Klara Hildach, married Karl Druschki (1844 - June 19, 1902), merchant (wholesale of wood) at Lindenweg 3, Görlitz, who was a founding member and since 1893 president of the German Society of Rosefriends. [see "Adressbuch der Stadt Görlitz 1912/13" and "Stadtbild", Görlitz, February 2013]