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Since the 1950s and early 1960s, 90% of Kentucky bluegrass seed in the United States has been produced on specialist farms in Idaho, Oregon and Washington. During the 1990s [ citation needed ] botanists began experimenting with hybrids of Poa pratensis and Texas bluegrass ( P. arachnifera ), with the goal of creating a drought and heat ...
Map of wood-filled areas in the United States, circa 2000 [1]. In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2]
Before European-American settlement, various cultures of Indigenous peoples of the Americas lived in the region. The pre-colonization state of the Bluegrass is poorly known, but it is thought to have been a type of savannah known as oak savanna, with open grassland containing clover, giant river cane (a type of bamboo), and scattered enormous trees, primarily bur oak, blue ash, Shumard's oak ...
Kentucky bluegrass (Poa pratensis) is the most extensively used cool-season grass used in lawns, sports fields, and golf courses in the United States. [14] Annual bluegrass ( Poa annua ) can sometimes be considered a weed.
A list of tree species, grouped generally by biogeographic realm and specifically by bioregions, and shade tolerance. Shade-tolerant species are species that are able to thrive in the shade, and in the presence of natural competition by other plants. Shade-intolerant species require full sunlight and little or no competition.
Agriculture, forestry and other prized Kentucky industries are at risk because of a range of invasive plant species in the state. These 10 plants are among Kentucky's most notorious invasives. How ...
California also has 1,023 species of non-native plants, some now problematic invasive species, such as yellow star-thistle, that were introduced during the Spanish colonization, the California Gold Rush, and subsequent immigrations and import trading of the 18th, 19th and 20th centuries.
These species, commonly called zoysia or zoysiagrass, are found in coastal areas or grasslands. [5] It is a popular choice for fairways and teeing areas at golf courses. The genus is named after the Slovenian botanist Karl von Zois (1756–1799).