B and T World Seeds' reference number:
USDA average, annual, minimum temperature Zone:7
Type of plant - deciduous
Fruit: to 3.5x1.5cm.
Foliage: to 8x4cm., BLUE-GREEN
Height in meters: 20x10
Quercus douglasii seeds may be subject to seasonal availability
Common names for Quercus douglasii:
is included in the following B and T World Seeds flowering plant categories:
29: Temperate Forest and Woodland Tree and Shrub Seed List
57: Arid and Dry Condition Plant Seed List
76: Californian Native Plant Seed List
131: Toxic Plants
190: Trees and Shrubs For Mediterranean Climates
719: North American Native Ethnobotanicals
Quercus douglasii seeds will usually germinate in 120-365 days, even under good conditions germination may be erratic. Normally will only germinate with light so surface sow. Sow seeds about 1mm deep in a Peaty seed sowing mix at about 10°C.
Stratification (cold treatment or vernalization) Some seeds need to be overwintered before they will germinate. Some seeds need just a couple of weeks, others 3 months. Seeds can be stratified in dampened peat or sand, in a plastic box or bag at 4°C or 5°C in a refrigerator. The seeds should not be frozen or in a wet medium. Very small seeds can be sown on the surface of their growing medium, in pots sealed in plastic bags, and kept in the 'fridge. Many vernalized seeds need light to germinate when they are sown in the "Spring".
Soak for 24 hours (Pre-chill for 3 months)