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In 2012 the USDA updated their plant hardiness map based on 1976–2005 weather data, using a longer period of data to smooth out year-to-year weather fluctuations. [7] Two new zones (12 and 13) were added to better define and improve information sharing on tropical and semitropical plants, they also appear on the maps of Hawaii and Puerto Rico.
Gold Medal Plant Award Program sponsored by the Pennsylvania Horticultural Society this program recognizes "trees, shrubs, and woody vines of outstanding merit" and are recommended for USDA Zones 5-7 and is a good place to look when considering adding shrubs and trees to the home garden.
The USDA also refers to it as the Miami Station. [1] The introduction of economically useful plants into the US is a three-step process: (1) explorers find the plants in foreign countries; (2) the plants are sent back to a USDA introduction garden where they are evaluated; (3) successful plants are distributed to farmers and nurserymen.
The United States Department of Agriculture (USDA) is an executive department of the United States federal government that aims to meet the needs of commercial farming and livestock food production, promotes agricultural trade and production, works to assure food safety, protects natural resources, fosters rural communities and works to end hunger in the United States and internationally.
Since the establishment of the Office of Seed and Plant Introduction there has been an office within the USDA with this responsibility, though its name changes periodically. [2] Today, the branch of the USDA responsible for collecting and introducing new plant species is called the National Germplasm Resources Laboratory. [2] [7]
Matricaria discoidea, commonly known as pineappleweed, [3] wild chamomile, disc mayweed, and rayless mayweed, is an annual plant native to North America and introduced to Eurasia where it grows as a common herb of fields, gardens, and roadsides. [4]
Wetlands Reserve Program (WRP) is a voluntary program implemented by the U.S. Department of Agriculture (USDA) that USDA may purchase conservation easements from eligible landowners who voluntarily protect wetlands by restoring, maintaining, and improving the hydrologic conditions, native species, and natural topography of the wetlands. [11]
Plant liners must also have established root systems that touch the outer edges of the container and stay intact when lifted from the container. [2] The U.S. Department of Agriculture's National Plant Materials Manual defines "liner" as plant material which is grown in one location and then “lined-out” in another location for finishing off ...