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  2. Hardiness zone - Wikipedia

    en.wikipedia.org/wiki/Hardiness_zone

    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 30 to 40 °F (−1.1 to 4.4 °C). Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale.

  3. Crop rotation - Wikipedia

    en.wikipedia.org/wiki/Crop_rotation

    Polyculture systems, such as intercropping or companion planting, offer more diversity and complexity within the same season or rotation. An example is the Three Sisters, the inter-planting of corn with pole beans and vining squash or pumpkins. In this system, the beans provide nitrogen; the corn provides support for the beans and a "screen ...

  4. When to start planting seeds indoors? Check your frost date - AOL

    www.aol.com/news/start-planting-seeds-indoors...

    Those gardening in horticultural zones higher than 9 can ignore this advice, as the southernmost parts of the continental U.S., as well as Puerto Rico and Hawaii, are considered frost-free (there ...

  5. Growing degree-day - Wikipedia

    en.wikipedia.org/wiki/Growing_degree-day

    Growing degree days (GDD), also called growing degree units (GDUs), are a heuristic tool in phenology.GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and animal development rates such as the date that a flower will bloom, an insect will emerge from dormancy, or a crop will reach maturity.

  6. List of Northern American nectar sources for honey bees

    en.wikipedia.org/wiki/List_of_Northern_American...

    Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]

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  8. Zone 4 - Wikipedia

    en.wikipedia.org/wiki/Zone_4

    Zone 4 may refer to: Hardiness zone, a geographically defined zone in which a specific category of plant life is capable of growing; Marcory Zone 4, one of the four zones of Marcory, Abidjan, Ivory Coast; Travelcard Zone 4, of the Transport for London zonal system; Zone 4 (record label), a record label created by producer Polow da Don; Zone 4 ...

  9. 5 Items From the 1970s That Are Worth a Lot of Money - AOL

    www.aol.com/5-items-1970s-worth-lot-170007423.html

    The Trump Economy Begins: 4 Money Moves Retirees Should Make Before Inauguration Day. 3 Things Retirees Should Sell To Build Their Retirement Savings.

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