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A hardiness zone is a geographic area defined as having a certain average annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most widely used system, developed by the United States Department of Agriculture (USDA) as a rough guide for ...
Kudzu is an invasive plant species in the United States, introduced from Asia with devastating environmental consequences, [1] earning it the nickname "the vine that ate the South". It has been spreading rapidly in the Southern United States, "easily outpacing the use of herbicide, spraying, and mowing, as well increasing the costs of these ...
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USDA Plant Hardiness Zone Regional Map - North Central US. The climate is humid continental, displaying both the cool summer and warm summer subtypes as one travels from north to south. The United States Department of Agriculture has the region falling mainly in zone 5a, with the northern fringe being 4b. A few patches in Wisconsin are 4a.
1 Coast Range. 2 Puget Lowland. 3 Willamette Valley. 111 Ahklun Mountains and Kilbuck Mountains. 113 Alaska Peninsula Mountains. 115 Cook Inlet. 119 Pacific Coastal Mountains. 120 Coastal Western Hemlock-Sitka Spruce Forests. The corresponding CEC ecoregion in Canada is called the Pacific Maritime Ecozone .
The United States is unique among countries in that its terrestrial ecoregions span three biogeographic realms: the Nearctic, Neotropical, and Oceanian realms. 50 states. Alaska is the most biodiverse state with 15 ecoregions across 3 biomes in the same realm. California comes in a close second with 13 ecoregions across 4 biomes in the same realm.
This is a list of U.S. state and territory plants and botanical gardens — plants and botanical gardens which have been designated as an official symbol(s) by a state or territory's legislature. 5 U.S. states and 1 U.S. territory have an official state/territory plant. 7 U.S. states have an official state botanical garden or arboretum.
A community garden is any piece of land gardened by a group of people. [3] The majority of gardens in community gardening programs are collections of individual garden plots, frequently between 3 m × 3 m (9.8 ft × 9.8 ft) and 6 m × 6 m (20 ft × 20 ft). This holds true whether they are sponsored by public agencies, city departments, large ...