Horticulture has a very long history. The study and science of horticulture dates all the way back to the times of Alexander the Great, and has been going on ever since, with present day horticulturists such as Freeman S. Howlett, the revolutionary horticulturist. [3] The origins of horticulture lie in the transition of human communities from nomadic hunter-gatherers to sedentary or semi-sedentary horticultural communities, cultivating a variety of crops on a small scale around their dwellings or in specialized plots visited occasionally during migrations from one area to the next. (such as the "milpa" or maize field of Mesoamerican cultures).[4] In forest areas such horticulture is often carried out in swiddens ("slash and burn" areas).[5] A characteristic of horticultural communities is that useful trees are often to be found planted around communities or specially retained from the natural ecosystem.
Horticulture sometimes differs from agriculture in (1) a smaller scale of cultivation, using small plots of mixed crops rather than large field of single crops (2) the cultivation of a wider variety of crops, often including fruit trees. In pre-contact North America the semi-sedentary horticultural communities of the Eastern Woodlands (growing maize, squash and sunflower) contrasted markedly with the mobile hunter-gatherer communities of the Plains people. In Central America, Maya horticulture involved augmentation of the forest with useful trees such as papaya, avocado, cacao, ceiba and sapodilla. In the cornfields, multiple crops were grown such as beans (using cornstalks as supports), squash, pumpkins and chilli peppers, in some cultures tended mainly or exclusively by women.[6]
Gallery
 The Butchart Gardens, British Columbia, Canada |  Cool climate greenhouse extend the growing season |  Community gardens often have several horticultural practices in use |
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