Pinus koraiensis

Pinus koraiensis is an evergreen Tree growing to 20 m at a medium rate.
It is hardy to zone 3. It is in leaf all year, in flower in May, and the seeds ripen in September. The species is monoecious and is pollinated by Wind. The plant is not self-fertile.
Suitable for: light and medium soils, prefers well-drained soil and can grow in nutritionally poor soil. Suitable pH: acid and neutral soils. It cannot grow in the shade. It prefers dry or moist soil and can tolerate drought.

Management: Standard Minor Global Crop Other Systems: Irreg. Intercrop Staple Crop: Protein-oil
Thrives in a light well-drained sandy or gravelly loam. Dislikes poorly drained moorland soils. Established plants tolerate drought. This species prefers a cool moist climate. Leaf secretions inhibit the germination of seeds, thereby inhibiting the growth of other plants below the tree. This species is sometimes cultivated for its edible seed, there are some named varieties. It is one of the main species utilized for its edible seeds, being gathered from cultivated and wild trees. Large quantities of the seeds are exported as a food crop from N. China. Plants bear cones when they are 3.5 metres tall in Cornwall. Trees are slow growing when young. Growth in the south-east of Britain is generally poor but trees in the west and north are healthy and growing well with average annual height increases of around 25cm and girth increases of 3cm or more. Plants are strongly outbreeding, self-fertilized seed usually grows poorly. They hybridize freely with other members of this genus. The cones do not open, seed is extracted by breaking up the soft scales of the cone. Plants in this genus are notably susceptible to honey fungus. The plant is heat tolerant in zones 7 through 1. .
At this temperature, many plants begin to suffer physiological damage. Heat Zones range from 1 to 12 .
For example Heat Zone. 11-1 indicates that the plant is heat tolerant in zones 11 through 1.) For polyculture design as well as the above-ground architecture information on the habit and root pattern is also useful and given here if available. The plant growth habit is a standard with a non-suckering single trunk . An evergreen. The root pattern is flat with shallow roots forming a plate near the soil surface . The root pattern is a tap root similar to a carrot going directly down .