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Swiss pine is a popular ornamental tree in parks and large gardens, giving steady though not fast growth on a wide range of sites where the climate is cold. It is very tolerant of severe winter cold, hardy down to at least −50 °C (−58 °F), and also of wind exposure. The seeds are also harvested and sold as pine nuts.
Pinus nigra is a large coniferous evergreen tree, growing to 20–55 metres (66–180 feet) high at maturity and spreading to 6 to 12 m (20 to 39 ft) wide. The bark is gray to yellow-brown, and is widely split by flaking fissures into scaly plates, becoming increasingly fissured with age.
Wollemia is a genus of coniferous trees in the family Araucariaceae, endemic to Australia. It represents only one of three living genera in the family, alongside Araucaria and Agathis (being more closely related to the latter). The genus has only a single known species, Wollemia nobilis, commonly known as the Wollemi Pine (though it is not a ...
Picea glauca, the white spruce, [4] is a species of spruce native to the northern temperate and boreal forests in North America. Picea glauca is native from central Alaska all through the east, across western and southern/central Canada to the Avalon Peninsula in Newfoundland, and south to Montana, North Dakota, Minnesota, Wisconsin, Michigan, Upstate New York and Vermont, along with the ...
Picea abies, the Norway spruce[2] or European spruce, [3] is a species of spruce native to Northern, Central and Eastern Europe. [4] It has branchlets that typically hang downwards, and the largest cones of any spruce, 9–17 cm long. It is very closely related to the Siberian spruce (Picea obovata), which replaces it east of the Ural Mountains ...
Casuarina equisetifolia, commonly known as coastal she-oak, horsetail she-oak, [3] ironwood,[4] beach sheoak, beach casuarina, whistling tree[5] or Australian pine[6] is a species of flowering plant in the family Casuarinaceae and is native to Australia, New Guinea, Southeast Asia and India.
Christmas tree pests and weeds. An entomologist checks Scots pine for pine shoot beetles at a Christmas tree farm near East Lansing, Michigan. Pine and fir trees, grown purposely for use as Christmas trees, are vulnerable to a wide variety of pests, weeds and diseases. Many of the conifer species cultivated face infestations and death from such ...
The term bristlecone pine covers three species of pine tree (family Pinaceae, genus Pinus, subsection Balfourianae). All three species are long-lived and highly resilient to harsh weather and bad soils. One of the three species, Pinus longaeva, is among the longest-lived life forms on Earth. The oldest of this species is more than 4,800 years ...