Yunnan Pine

[Audio] The Yunnan Pine Pinus yunnanensis. Yunnan Pine.

[Audio] The Yunnan pine is a medium sized evergreen, coniferous species of tree that grows to mature heights of 100 feet or ( 30 meters), or shrub-like in areas where forest fires are frequent. Trunk diameter is up to 40 inches or( 1 meters) wide, measured at breast height. Crown is dense and broadly conical, eventually flattening with age. The long, drooping needles are borne in fascicles of 2, and can reach lengths of 6 to 12 inches. The immature seed cones are green and become light brown when mature. This species is native to China, predominantly at elevations of 2,000 to 10,000 feet or ( 600 to 3,000 meters) above sea level on the high plateaus of Yunnan province, but extending north into Sichuan, where it intergrades with Pinus tabuliformis, and south into northern Burma, where it intergrades with Pinus kesiya. In recent times it has extended its range as competing broadleaf forests are logged. The timber is used for construction, railway sleepers, boards, furniture, and wood pulp. The trunk can be used as a source of resin, and the bark for producing tannin..

[Audio] How to grow Yunnan Pine Collect the mature seed cones in october, if you can find a Yunnan pine tree. If not, you can buy seeds online. Either way, soak the seeds in water for 24 hours. Seeds should be sown into containers filled with a good quality general potting compost. Suitable containers could be plant pots, seed trays or plug trays or even improvised containers with drainage holes. Firm the compost gently and sow the seeds on the surface. If you are sowing in plug trays, sow 1 or 2 seeds per cell. Cover the seeds with a couple of millimeters of vermiculite or failing that a fine layer of sieved compost. Follow with a gentle watering and keep them at room temperature. Germination will begin within 10 to 14 days of sowing. The seedlings are reasonably robust and trouble free and usually grow to a height of between 3 and 10 cm in the first growing season depending on the sowing date and cultural techniques. Developing seedlings should be fine in full sun, keep them well watered and free of competing weeds. Growth will accelerate in the second and subsequent years and the developing young trees should be re-potted as necessary preferably during the dormant season. After perhaps 2 or 3 years they are ready to be planted in their permanent position.

[Audio] Where to grow Yunnan Pine The Yunnan Pine grows best in USDA zones 8 to 9, and Sunset garden zones 5 to 9, and 12 to 24. The tree doesn't like growing in narrow spaces. Plant it in an open area instead, where the tree can grow properly to a large size..