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Hardiness Zones
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 landscaping and gardening, defines 13 zones by long-term average annual extreme minimum temperatures. It has been adapted by and to other countries (such as Canada) in various forms. A plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of . Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale. However, some confusion can exist in discussing buildings and HVAC, where "climate zone" can refer to the International Energy Conservation Code zones, where Zone 1 is warm and Zone 8 is cold. Other hardiness rating schemes have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Department Of Agriculture
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. It is headed by the secretary of agriculture, who reports directly to the president of the United States and is a member of the president's Cabinet. The current secretary is Brooke Rollins, who has served since February 13, 2025. Approximately 71% of the USDA's $213 billion budget goes towards nutrition assistance programs administered by the Food and Nutrition Service (FNS). The largest component of the FNS budget is the Supplemental Nutrition Assistance Program (formerly known as the 'Food Stamp' program), which is the cornerstone of USDA's nutrition assistance. The United Stat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2023 USDA Plant Hardiness Zone Map (USA)
3 (three) is a number, numeral and digit. It is the natural number following 2 and preceding 4, and is the smallest odd prime number and the only prime preceding a square number. It has religious and cultural significance in many societies. Evolution of the Arabic digit The use of three lines to denote the number 3 occurred in many writing systems, including some (like Roman and Chinese numerals) that are still in use. That was also the original representation of 3 in the Brahmic (Indian) numerical notation, its earliest forms aligned vertically. However, during the Gupta Empire the sign was modified by the addition of a curve on each line. The Nāgarī script rotated the lines clockwise, so they appeared horizontally, and ended each line with a short downward stroke on the right. In cursive script, the three strokes were eventually connected to form a glyph resembling a with an additional stroke at the bottom: ३. The Indian digits spread to the Caliphate in the 9th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carolina, Puerto Rico
Carolina (; ) is a Carolina barrio-pueblo, city and Municipalities of Puerto Rico, municipality on the northeastern coastal plain of Puerto Rico, immediately east of San Juan, Puerto Rico, San Juan and Trujillo Alto, Puerto Rico, Trujillo Alto, north of Gurabo, Puerto Rico, Gurabo and Juncos, Puerto Rico, Juncos, and west of Canóvanas, Puerto Rico, Canóvanas and Loíza, Puerto Rico, Loíza. Part of the San Juan–Bayamón–Caguas metropolitan area, San Juan metropolitan area, Carolina is spread over 12 barrios and the downtown area and administrative center of Carolina barrio-pueblo, Carolina Pueblo. In the coastal region of the municipality lies the resort and residential district of Isla Verde, Puerto Rico, Isla Verde, where the main international airport of Puerto Rico, the Luis Muñoz Marín International Airport, is located. Carolina is the third most populated municipality in the Geography of Puerto Rico, archipelago and island. History The town was founded by Spanish col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Juan, Puerto Rico
San Juan ( , ; Spanish for "Saint John the Baptist, John") is the capital city and most populous Municipalities of Puerto Rico, municipality in the Commonwealth (U.S. insular area), Commonwealth of Puerto Rico, an unincorporated territory of the United States. As of the United States Census Bureau, 2020 census, it is the List of United States cities by population, 57th-most populous city under the jurisdiction of the United States, with a population of 342,259. San Juan was founded by Spanish Empire, Spanish colonists in 1521, who called it Ciudad de Puerto Rico (Spanish for "Rich Port City"). Puerto Rico's capital is the second oldest European-established capital city in the Americas, after Santo Domingo, in the Dominican Republic, founded in 1496, and is the List of North American settlements by year of foundation, oldest European-established city under United States of America, United States sovereignty. Several historical buildings are located in the historic district of Old S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arbor Day Foundation
The Arbor Day Foundation is an American 501(c)(3) nonprofit membership organization dedicated to planting trees. The Arbor Day Foundation has more than one million members and has planted more than 500 million trees in neighborhoods, communities, cities and forests throughout the world. The Foundation's stated mission is "to inspire people to plant, nurture, and celebrate trees." History The Arbor Day Foundation was founded in 1969, the centennial of the first Arbor Day observance. Programs Through the global reforestation program, the Arbor Day Foundation and international partners have replanted more than 108 million trees lost to fire, insects, disease, and weather in forests in the United States and around the world. These rejuvenated forests help to protect watersheds, stabilize soil, restore wildlife habitats, improve air quality and create jobs. Tree City USA Founded in 1976 and co-sponsored by the National Association of State Foresters and the United States For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic City, New Jersey
Atlantic City, sometimes referred to by its initials A.C., is a Jersey Shore seaside resort city (New Jersey), city in Atlantic County, New Jersey, Atlantic County, in the U.S. state of New Jersey. Atlantic City comprises the second half of the Atlantic City-Hammonton, New Jersey, Hammonton metropolitan statistical area, which encompasses those cities and all of Atlantic County for statistical purposes. Both Atlantic City and Hammonton, as well as the surrounding Atlantic County, are culturally tied to Philadelphia and constitute part of the larger Philadelphia metropolitan area or Delaware Valley, the nation's Metropolitan statistical area, seventh-largest metropolitan area as of 2020. Located in South Jersey on Absecon Island and known for its taxis, casinos, nightlife, Boardwalk (entertainment district), boardwalk, and Atlantic Ocean beaches and coastline, the city is prominently known as the "Las Vegas of the East Coast" and inspired the U.S. version of the board game ''M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baltimore
Baltimore is the most populous city in the U.S. state of Maryland. With a population of 585,708 at the 2020 census and estimated at 568,271 in 2024, it is the 30th-most populous U.S. city. The Baltimore metropolitan area is the 20th-largest metropolitan area in the country at 2.84 million residents. The city is also part of the Washington–Baltimore combined statistical area, which had a population of 9.97 million in 2020. Baltimore was designated as an independent city by the Constitution of Maryland in 1851. Though not located under the jurisdiction of any county in the state, it forms part of the central Maryland region together with the surrounding county that shares its name. The land that is present-day Baltimore was used as hunting ground by Paleo-Indians. In the early 1600s, the Susquehannock began to hunt there. People from the Province of Maryland established the Port of Baltimore in 1706 to support the tobacco trade with Europe and established the Town ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Urban Heat Island
Urban areas usually experience the urban heat island (UHI) effect; that is, they are significantly warmer than surrounding rural areas. The temperature difference is usually larger at night than during the day, and is most apparent when winds are weak, under Block (meteorology), block conditions, noticeably during the summer and winter. The main cause of the UHI effect is from the modification of land surfaces, while waste heat generated by energy usage is a secondary contributor. Urban areas occupy about 0.5% of the Earth's land surface but host more than half of the world's population. As a population center grows, it tends to expand its area and increase its average temperature. The term heat island is also used; the term can be used to refer to any area that is relatively hotter than the surrounding, but generally refers to human-disturbed areas. Monthly precipitation (meteorology), rainfall is greater downwind of cities, partially due to the UHI. Increases in heat within urb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Washington, DC
Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and Federal district of the United States, federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with Maryland to its north and east. It was named after George Washington, the first president of the United States. The district is named for Columbia (personification), Columbia, the female National personification, personification of the nation. The Constitution of the United States, U.S. Constitution in 1789 called for the creation of a federal district under District of Columbia home rule, exclusive jurisdiction of the United States Congress, U.S. Congress. As such, Washington, D.C., is not part of any U.S. state, state, and is not one itself. The Residence Act, adopted on July 16, 1790, approved the creation of the Capital districts and territories, capital district along the Potomac River. The city ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
US National Arboretum
The United States National Arboretum is an arboretum in northeast Washington, D.C., operated by the United States Department of Agriculture's Agricultural Research Service. It was established in 1927 by an act of Congress after a campaign by USDA Chief Botanist Frederick Vernon Coville. It is in size and is located northeast of the Capitol building, with entrances on New York Avenue, NE and R Street, NE. The campus's gardens, collections, and features are connected by roadways that are long in total. In addition to the main campus in Washington, D.C., there are research locations at the Henry A. Wallace Beltsville Agricultural Research Center in Beltsville, Maryland and in McMinville, Tennessee. The Arboretum functions as a major center of botanical research conducted by the USDA, including applied research on trees, shrubs, turf, and the development of new ornamental plants. In addition to a library and a historical collection (archive), the institution also has an exten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Donald Wyman
Donald Wyman (1904 — 6 December 1993) was an American horticulturist, the head of horticulture at Harvard University's Arnold Arboretum from 1935 to 1970. He took a bachelor's degree in horticulture from Pennsylvania State College (1926) and a master's in forestry (1933), then a PhD in horticulture at Cornell University (1935). He joined the Arboretum in 1935 and served for six months without salary in the depths of the Great Depression before being named horticulturist in 1936. He was the author of many books, including ''Wyman's Gardening Encyclopedia'' (1971) and was a frequent contributor to the journal '' Arnoldia''. Wyman served as president, director, and trustee of the American Horticultural Society. At the Arnold Arboretum he departed from the original method of planting by botanical association, to mark vistas and turns with specimen trees, and was energetic in acquiring seeds of many species that he introduced to American horticulture. He retired in 1970. He receiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
