Although hardy, it performs best in warm climates. 3
Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Blue Moon is thought of as hardy, so this plant will survive close to or on freezing temperatures. Blue Moon requires a loamy soil with a ph of 4.5 - 8.0 - it grows best in moderately acidic soil to weakly alkaline soil.As a hybrid, it will not reliably grow true to type from seed.
Provide a sunny spot for this rose and deadhead in late winter.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Blue Moon is a hardy plant.The original name, ‘Mainzer Fastnacht’ refers to the Shrove Tuesday festival in the city of Mainz. The breeder, Herr Tantau, was persuaded to change the name to ‘Sissi", as it was easier for non-Germans to pronounce. However, ’sissy’ is a slang term for ‘weakling’ in English, so a therd alternative, ‘Blue Moon’ was found. 1
Registration name: TANnacht
Mainzer Fastnacht, Sissi, Blue Monday
1 “Botanica’s Roses”
2 HelpMeFind entry for ‘Blue Moon’ rose
2 “The American Rose Society Encyclopedia of Roses”