Camellia sinensis is an evergreen shrub or small tree native to eastern Himalayan and southern Chinese regions, cultivated worldwide for its leaves which produce green, black, oolong, and white teas. Tea seed germination is slow and highly variable, typically requiring 30-60 days and benefiting significantly from cold stratification pretreatment. Seed viability is often low, with only 10-15% of randomly selected seeds producing viable seedlings.
Before sowing
Cold stratification is recommended to improve germination reliability. Soak seeds for 24-48 hours, then stratify in moist peat or sand at 4°C for 60-120 days. Keep seeds moist but not soggy during stratification. Alternatively, seeds can germinate without stratification but with lower and less reliable success rates.
Sowing
What to expect
Tips
Cold stratification at 4°C for 60-120 days greatly improves germination rates (64-93% success). Soak seeds overnight before stratification and select sinking seeds over floating ones. Seeds need light to germinate, so sow them 2mm deep or surface sow. Keep substrate uniformly moist but not waterlogged, as seeds are sensitive to excessive moisture. Germination may be erratic even under ideal conditions. Enclose pots in sealed plastic bags to maintain moisture and warmth. Seed coat may crack or show visible endosperm through cracks - this is a positive sign. Germination is slow; patience is essential as seeds may take 8 weeks to show signs of growth. Once seedlings develop two sets of true leaves, transplant into larger pots and gradually move to partial shade conditions. Use acidic soil and maintain moderate humidity during early seedling development.
Sources: University of Hawaii CTAHR, Gardening Know How, LeafHouse Tea, Tea Happiness, Deep Green Permaculture, Camellia Forest Nursery, Jaganathan et al. (2017) peer-reviewed research on seed dormancy
