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Approximately 43.00 seeds per gram
seed-counts are only a guide, not to be used for accurate calculations.
B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Pinus thunbergii is cold hardy
USDA Zone:6 -10° to 0°F (-23.5° to -18°C)
|Type of plant - evergreen tree
cones ovate-conical, -7x3cm....(stratify 1-2 months, germ. 2-4 weeks)
to 14cm.x2mm., in pairs
|Height, in meters: 30
Height, in feet: 99.00
|Pinus thunbergii seeds may be subject to seasonal availability
Synonyms (alternative names) for Pinus thunbergii:
Common names for Pinus thunbergii:
|(good bonsai, exc. coastal evergreen), Black Pine, Japanese Black Pine, Japanische Schwarzkiefer, Kuro-Matsu, Thunberg's Kiefer,|
is included in the following
B and T World Seeds flowering plant categories.
|8||: World Classic Tree Seed List|
|11||: Bonsai Seed List (Hardy and Tender)|
|29||: Temperate Forest and Woodland Tree and Shrub Seed List|
|50||: Japanese Native and Introduced Plants|
|51||: Chinese Native and Introduced Plants|
|60||: Economic Timber Trees|
|see also Cabinet Wood Tree Seeds|
|65||: World Coastal Tree and Plant Seed List|
|132||: Windy Condition Plant Shrub and Tree Seed List|
|157||: Conifer Seed List|
|See also *Australian and New Zealand Conifer Seed List|
|169||: Sandy Soil Plant Seed List|
|952||: Wholesale Selection|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Pinus thunbergii seeds will usually germinate in 30-60 days, even under good conditions germination may be erratic.
Pinus thunbergii seeds need to be "overwintered" before they will germinate.
Stratification; cold treatment or vernalization. Seeds of some species 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 seed (Pre-chill for 6 weeks)