Abies procera, commonly known as Noble Fir or Red Fir, is the tallest of all true fir species, native to the cool, moist Pacific Northwest mountains. Its germination requires a cold stratification period of 30-60 days at 4°C to break physiological dormancy, after which seeds germinate relatively easily when provided with consistent moisture and moderate temperatures.
Before sowing
Cold stratification is essential to break dormancy. Seeds may begin germinating during the stratification period.
Sowing
What to expect
Tips
Seeds may begin germinating during cold stratification; inspect regularly and sow those showing radicle emergence immediately. Sow on surface of compost and cover lightly with 2-3mm vermiculite or sieved compost. Tamp soil firmly and apply mulch after sowing. Maintain consistent moisture but avoid waterlogged conditions. Keep seedlings in full sun and protect from damping off fungal diseases by avoiding overly dense sowing. Fresh seed produces best results; germination can be disappointing with untreated seed.
Sources: Forest Research (UK), USDA Southern Research Station, Native Plants PNW, Gardenia.net, TreeSeedOnline, Sheffield's Seed Company, PFAF Plant Database
