![metasequoia glyptostroboides winter metasequoia glyptostroboides winter](https://searcharchives.vancouver.ca/uploads/r/null/1/1/1161439/871d69e8-2e5a-42a2-a7af-eb06ecc2d7eb-A56962.jpg)
Our results suggest that the intensification of drought in winter and spring due to development of the monsoon climate in Asia was an important factor for the disappearance of Metasequoia in southwest China. Thus, moisture conditions were the main factor affecting seed germination and seedling growth and survival of Metasequoia. At −0.6 MPa to −0.7 MPa, seedling survival was only 12%–15%. As the concentration of polyethylene glycol 6000 increased, elongation of the roots and stems first increased and then decreased, while the number of leaves and percentage of seedling survival decreased. Seed germination decreased with an increase in storage temperature, and seeds stored at room temperature (23–25 ☌) for 6 and 12 months germinated to 0–24.3%. Low water stress (−0.2 MPa to −0.4 MPa) promoted germination of Metasequoia seeds, but at −1.5 MPa to −2 MPa normal seedling emergence was only 1.4–2.4%. However, germination decreased significantly at 5 ☌ and 35 ☌. Germination was 76%–83.2% at temperatures ranging from 10 ☌ to 30 ☌ and did not differ significantly. To explore the possible reasons for the disappearance of Metasequoia in southwest China, controlled experiments were conducted on seed germination and seedling growth and survival over a range of temperatures and at different levels of water stress. Give it 7 metres clearances a guide.Metasequoia glyptostroboides is a well-known relict conifer species that was widely distributed in the Northern Hemisphere from the Mesozoic (Cretaceous) to early Cenozoic, after which its distributional range was contracted significantly. This is a tree with a vigorous root system and in should be planted away from buildings, paths and roadways and drainage pipes. This is a cool climate conifer, the best locations are in the foothill areas in cooler climates.Ī humus rich moist soil is best, good drainage is not so important as the tree will survive in wet soils, and even periods in standing water. Phenology: In the spring, needles (leaves) begin to unfold, during the summer months the unfolded needles turn green and create a green canopy around the tree, then in the fall the needles turn a yellow-brown color and finally fall. With a natural pyramidical habit and buttressed trunk this is a string and stately tree. This tree provides winter cover for birds, small mammals and deer. The bark on the trunk becomes deeply fissured over time, each tree produces both male and female cones. It can be used to create avenue, or used in plantings in rural areas of golf courses. Some magnificent examples can be found in Tasmania in the arboretum at Eugenana, where it has the ideal climate and soil. This is a deciduous conifer, fast growing and an excellent specimen tree for large gardens and parks. The plant is now protected by law in China. Once thought extinct, the Dawn Redwood was rediscovered in its native China in the mid 1940s. It starts to grow early in the spring and frequently its growth is not fully matured until mid or late fall. Melasequoia glyptostroboides was found in an area of a long growing season. Metasequoia glyptostroboides Gold Rush – Dawn Redwood The Dawn Redwood More important than winter cold is the length of growing season, and the time of late spring freezes and early fall freezes.