Hardiness: -15°C
Sowing: Immerse the seeds in H2SO4 for 1 hour and rinse thoroughly. Stratify at 3°C/5°C for 3 months and sow in spring.
Hardiness: -15°C
Sowing: Immerse the seeds in H2SO4 for 1 hour and rinse thoroughly. Stratify at 3°C/5°C for 3 months and sow in spring.