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The chilling requirement of a fruit is the minimum period of cold weather after which a fruit-bearing tree will blossom.It is often expressed in chill hours, which can be calculated in different ways, all of which essentially involve adding up the total amount of time in a winter spent at certain temperatures.
Cold-hardy citrus is citrus with increased frost tolerance and which may be cultivated far beyond traditional citrus growing regions. Citrus species and citrus hybrids typically described as cold-hardy generally display an ability to withstand wintertime temperatures below −5 to −10 °C (23 to 14 °F).
The hardiness scales do not take into account the reliability of snow cover in the colder zones. Snow acts as an insulator against extreme cold, protecting the root system of hibernating plants. If the snow cover is reliable, the actual temperature to which the roots are exposed will not be as low as the hardiness zone number would indicate.
Blossoms and leaves of the 'Dorsett Golden' apple cultivar. Dorsett Golden is a 'Golden Delicious'-like cultivar of domesticated apple and is descended from it, but is different with that it is early season, and most importantly, it needs a lower amount of cold weather (less than 300 hours) to go into blooming, so it is possible to grow in warm climates.
The species is largely grown for local consumption; the short shelf-life of the fruit limits its wider use. The tree is not cold tolerant (as is the breadfruit). It can grow between latitude 15° north and south, and in coastal regions where temperatures never stay under 7 °C (45 °F).
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The term is sometimes used to refer to the need of herbal (non-woody) plants for a period of cold dormancy in order to produce new shoots and leaves, [1] but this usage is discouraged. [2] Many plants grown in temperate climates require vernalization and must experience a period of low winter temperature to initiate or accelerate the flowering ...
Garcinia intermedia is a species of tropical American tree which produces edible fruit. [2] In English it is known as the lemon drop mangosteen (a name it shares with the closely related and similarly tasting Garcinia madruno) or sometimes monkey fruit. In Spanish it is called mameyito, though it is known as jorco in Costa Rica. [3]