Lonicera fragrantissima is a deciduous to semi-evergreen shrub from China, valued for its early fragrant, creamy-white flowers that bloom in winter. Seeds require morphophysiological dormancy-breaking through warm and cold stratification.
Before sowing
Stratification
fria_depois_quente · 60 d · 5°C
Soak
24 h Warm water soak for 24 hours after cold stratification
Warm plus cold stratification required. Cold stratification 60-90 days at 5°C, followed by warm soak.
Sowing
Substrate
peat moss and potting soil mixture
Depth
levemente_coberta
Temperature
20°C
Moisture
media
Container
seed tray or small pots
Day/night swing
Diurnal temperature alternation (25/15°C) promotes embryo growth
What to expect
Step 1
Pre-treat the seed
Step 2
Sow at levemente_coberta · 20°C
Day 14–42
Seedlings emerge (~80%)
Tips
Seeds have underdeveloped embryos requiring stratification. Light promotes germination. Keep substrate moist during stratification and germination. Maintain good air circulation. Transplant seedlings when 2-3 inches tall.
Sources: Hidayati et al. (2000); New York Metropolitan Flora; Quinta dos Ouriques; Plant Care Today; Plantflowerseeds.com
