Hej!
De här råden ges på Tom Clothier's Seed Germination Database:
Här
Cimicifuga racemosa (Actaea racemosa heter den numera ) (Silverax) , Sow at 22ºC (71ºF) for 6 wks or more. Move to -4 to +4ºC (24-39ºF) for 6-8 wks. Then raise the temperature to 10ºC (50ºF). If no germination in 4-6 wks, repeat the cycle from the beginning. If the warm/cold cycles were not long enough, a new warm/cold cycle is needed.
Geranium pratense (Ängsnäva) , Sow at 18-22ºC (64-71ºF), if no germination after 4 wks, move to -4 to +4ºC (24-39ºF) for 4-6 wks, then move to 5-12ºC (41-53ºF) for germination
Jag hade ställt ut dem om jag var som du. Gräv ner dem under snön i det antal veckor som behövs så gror de säkert fint sedan.