Pinus parviflora (Japanese White Pine)

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Description

Pinus parviflora (Japanese White Pine) Seeds

Zones: 4 to 7.

Native to Japan.

The Japanese White pine is a an attractive evergreen conifer with a dense pyramidal form when young, but developing more open branching and a flatter top in mature trees. It has bluish-green needles up to 3 inches (7 cm) long in bundles of five.  Cones are oval shaped, reddish-brown, thick, leathery in texture and 2-4 inches (5 to 10 cm) long. Bark is greyish and develops a scaly platy texture on mature trees.

Since the Japanese White pine is a dense, slow-growing evergreen with a smaller stature it is an excellent ornamental planting for smaller landscapes. Its irregular silhouette makes it very popular as a bonsai specimen in Japan and sought after by bonsai enthusiasts around the world.

The Japanese White pine does best in moist well-drained soils and prefers a site with full sun.

Size: Height 25 to 50 ft; Width 25 to 50 ft.

Germination Instructions

Scarification: Scarify the seeds by lightly sanding or filing them and placing them in water to soak for 24-48 hours before beginning stratification.

Stratification: Seed requires 60 days warm moist stratification followed by 90 days cold moist stratification at 3° C (37° F) to 5° C (41° F).

  1. Soak seeds in water for 24-48 hours.
  2. Place seeds in sandwich bag(s) with a bit of damp sand or vermiculite to keep moist.
  3. Keep at room temperature for about 60 days. Occasionally lightly spray water to keep seeds and sand moist.
  4. Place the bag(s) with seeds in refrigerator for about 90 days.
  5. After the required time take the seeds out of the refrigerator and sow the seeds in pots 1/4 inch deep and cover lightly. Water gently so as not to wash away the seeds. Keep soil moist but not wet.