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Pinus densiflora – Red japanese pine tree, japanese red pine, akamatsu

SKU: P-1696 Categories: , , Tags: , , ,

Botanical Nomenclature: Pinus densiflora
Common Name: red japanese pine tree, japanese red pine, akamatsu
Family: Pinaceae
Origin: Japan, Korea and Northeast China.
Height: Between 20 – 35 meters high
Brightness: Partial Shading, Full Sun
Climate: see description below

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Description

Red Japanese pine is known in Japan as “akamatsu and mematsu”, where it is widely cultivated for timber production and as an ornamental tree, playing an important role in classical Japanese gardens.

In winter its leaves turn yellow.

The species prefers its cultivation to full sun, in well drained and slightly acid soils.

Pinus densiflora has enormous potential for regeneration; and perhaps because of this, it has resisted the degradation and intervention of weathers and humans. It occurs from the coast, at sea level, to the lowest mountains, and can reach altitudes of 2,300 meters, extremely resistant to frost that may occur in Brazil.

Historically, this has been one of the most important species in Japanese architecture. One of the main surviving structural woods of the muromachi period and the edo period (1603 – 1867).

In addition to being friendly to local growers, it is also one of, or the main pine trees used for ornamentation in gardens in Japan, Europe and North America.

Species quite explored for bonsai art.

A magnificent example in the family of conifers, very special for our collection.

Germination Guide

🌍 Japan, Korea, northeastern China, and southeastern Russia (Primorye)
Moderate

Pinus densiflora, commonly known as Japanese Red Pine, is a beautiful East Asian conifer native to Japan, Korea, and northeastern China. Seeds of this species require cold stratification to overcome dormancy; a 30-day period at 4°C significantly improves germination rates and success.

Germination
Germination time
Expect germination in

10 – 30 days

Temperature

Min 15°C
Ideal 20°C
Max 20°C

Light
☁️ Indifferent

Substrate moisture
💧 Medium

Sowing depth
Lightly covered

Press seed
👆 Yes

Germination rate
89 %


Seed Pre-treatment
  • 💧

    Soaking — 24 hours
    Soak seeds in room temperature water for 24 hours before cold stratification or sowing. This hydration step improves germination success.
  • 🔨

    Hot water scarification
    Soak seeds in room temperature water for 24 hours before sowing to soften the seed coat and improve imbibition.
  • ❄️


    Cold stratification — 30 days at 4°C
  • 📋

    Additional notes
    Seeds benefit from cold stratification period of 30 days at 4°C to break dormancy and improve germination rates. Stratification can be shortened to 6 weeks minimum.

Substrate & Container
Recommended substrate
Well-drained sandy loam or gravelly loam; slightly acidic soil preferred

Recommended container
Individual pots in a cold frame or seedling trays with good drainage


Growing Tips
Sow seed 1/8 inch (3mm) deep, tamp the soil firmly, and mulch the seed bed to maintain consistent moisture. Sow in individual pots in a cold frame as soon as seeds are ripe if possible, otherwise in late winter. Keep substrate at medium moisture (not waterlogged). Avoid overly wet conditions which promote fungal issues. Patience is essential—germination may be slow and staggered over several weeks.

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