In agriculture, the growing season is the period of each year when crops can be grown. It is usually determined by climate and crop selection. Depending on the location, temperature, daylight hours (photoperiod), and rainfall, may all be critical environmental factors. A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... Agriculture (a term which encompasses farming) is the art, science or practice of producing food, feed, fiber and many other desired goods by the systematic raising of plants and animals. ... In thermodynamics, temperature is the physical property of a system that underlies the common notions of hot and cold —something that is hotter has the greater temperature. ... Prism splitting light Sunlight in the broad sense is the total spectrum of electromagnetic radiation given off by the Sun. ... Photoperiodism is the physiological reaction of organisms to the length of day or night. ... In meteorology, precipitation is any kind of water that falls from the sky as part of the weather. ...

In the northern U.S. and Canada, the growing season usually means the days between last and first frost, or approximately the last and first occurrence of 0°Celsius (freezing) overnight low temperature. This is roughly May to October. United States is the current Good Article Collaboration of the week! Please help to improve this article to the highest of standards. ... Water, Rabbit, and Deer: three of the 20 day symbols in the Aztec calendar, from the Aztec Sun Stone. ... It has been suggested that hoar frost be merged into this article or section. ... A degree Celsius (°C) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701-1744), who first proposed a similar system in 1742. ... In physics and chemistry, freezing is the process of cooling a liquid to the temperature (called freezing point) where it turns solid. ...

In much of Europe, the growing season is defined as the average number of days a year with a 24-hour average temperature of at least 5°C (41°F; 6°C is sometimes used). This is typically from April until October or November, although this varies considerably with latitude and altitude. World map showing Europe Political map Europe is one of the seven traditional continents of Earth; the term continent here referring to a cultural and political distinction, rather than a physiographic one, thus leading to various perspectives about Europes precise borders. ... Latitude, usually denoted symbolically by the Greek letter φ, gives the location of a place on Earth north or south of the Equator. ... Altitude is the elevation of an object from a known level or datum. ...

In some warm climates (like in the subtropical Savanna), the growing season is limited by the availability of water, with little growth in the dry season. A savanna or savannah is a grassland with widely spaced trees, and occurs in several types of biomes. ...

External Links

Extending growing season information from Sustainable Guide