The needles contain a substance called terpene, this is released when rain washes over the needles and it has a negative effect on the germination of some plants, including wheat. A fairly wind resistant tree, it can be grown as part of a shelterbelt planting. Oleo-resins are present in the tissues of all species of pines, but these are often not present in sufficient quantity to make their extraction economically worthwhile. The resins are obtained by tapping the trunk, or by destructive distillation of the wood. In general, trees from warmer areas of distribution give the higher yields. Turpentine consists of an average of 20% of the oleo-resin and is separated by distillation. Turpentine has a wide range of uses including as a solvent for waxes etc, for making varnish, medicinal etc. Rosin is the substance left after turpentine is removed. This is used by violinists on their bows and also in making sealing wax, varnish etc. Pitch can also be obtained from the resin and is used for waterproofing, as a wood preservative etc.Wood - light, soft, close-grained. It is occasionally made into lumber and is also used for general carpentry.
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A very cold-tolerant plant when fully dormant. A long-lived but slow-growing tree in the wild. Growth in Britain can be fairly fast, over 30cm a year has been recorded. It is slow to get started but then grows away quite well. It only makes a small tree in cultivation. Seed production in the wild consists of a cycle of one good year followed by several years of low crops. Leaf secretions inhibit the germination of seeds, thereby inhibiting the growth of other plants below the tree. The branches are very flexible. The cones are 7 - 25cm long, they open and shed their seed whilst still attached to the tree. Plants are strongly outbreeding, self-fertilized seed usually grows poorly. They hybridize freely with other members of this genus. This species is closely allied to P. albicaulis, differing mainly in the cones.Plants in this genus are notably susceptible to honey fungus.
Problems, pests & diseases
Associations & Interactions
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Polycultures & Guilds
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This table shows all the data stored for this plant.
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