Pinus nigra, commonly known as Austrian pine or black pine, is a moderately sized coniferous evergreen tree native to southern Europe and neighboring regions. The species is relatively easy to germinate with short seed dormancy that is easily broken; cold stratification significantly improves germination rates and synchronizes seedling emergence within a few days of each other.
Before sowing
Cold stratification is recommended to improve germination percentage and synchronize seedling emergence. However, reasonable success can be achieved without pre-treatment as seed dormancy is short and easily broken.
Sowing
What to expect
Tips
Sow seeds 2-3 millimeters deep or cover with fine vermiculite; keep substrate moist but not waterlogged; maintain room temperature after sowing; germination typically begins within 10-14 days. Select only seeds that sink when soaked overnight and discard floaters. Keep seedlings in bright, well-ventilated conditions to prevent damping off disease. Seedlings are robust and can be separated into individual pots at 15-20 weeks, at which point they become frost hardy.
Sources: Tree Seed Online, Forest Research UK, PFAF Plant Database, Missouri Botanical Garden, Forest Start Albania, TreeSeeds.ca
