Codonopsis bhtuanica, clematidea, lanceolata, mollis, ovata, pilosula, and tangshen , Sow at 20ºC (68ºF), if no germination in 3-4 wks, move to -4 to +4ºC (24-39ºF) for 2-4 wks small seed - do not cover
Other sites recommended using very fresh seed, since it loses germination quickly.
1 May, 2011
From the Seed Germination Database:
Codonopsis bhtuanica, clematidea, lanceolata, mollis, ovata, pilosula, and tangshen , Sow at 20ºC (68ºF), if no germination in 3-4 wks, move to -4 to +4ºC (24-39ºF) for 2-4 wks small seed - do not cover
Other sites recommended using very fresh seed, since it loses germination quickly.
5 May, 2011