ORGHPS Germination Guide: Sow immediately, Either the viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience. Sow @ 20°C. Seed germinates within 3 months Resents transplanting. Requires light or the seed is very fine. Surface sow and expose to light. * grow seedlings @ 12°C, overwinter seedlings above 1°C

Source: Ontario Rock Garden & Hardy Plant Society